In complete dominance, heter0zyg0us individuals carry both alleles -dominant and recessive- but only express the dominant phentoype. Cross 1: Nn x nn. Cross 2: NN x nn
What is complete dominance?When the dominant allele completely masks the recessive allele, we talk about complete dominance.
This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait. The dominant allele is hiding the expression of the recessive allele.
What is a punnett square?The Punnett square is a representation that shows the different types of gamete combinations according to the alleles involved in a cross.
Punnett square shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
So, according to the provided data,
Cross 1: gray fur x black fur
F1) 3 gray fur: 2 black fur
Cross 2: gray fur x black furF1) 0 gray fur: 5 black fur
By looking at the phenotype of progeny produced by family 2, and assuming complete dominance, we can infere that black is the dominant phenotype. Why is that? because when you crossed a gray animal with a black animal and the whole progeny is black.
So, assuming a diallelic gene coding for the fur color, we will name
N to the dominant allele that codes for blackn to the recessive allele that codes for gray.Possible genotypes and phenotypes
NN ⇒ Black fur ⇒ dominant phentoypeNn ⇒ Black fur ⇒ dominant phentoypenn ⇒ Grey fur ⇒ recessive phentoypeHere what you need to analyze is which phentoypes appear among the progeny and their frequencies to get to interprete the parents' genotype.
If both parents are h0m0zyg0us dominant (NN x NN), the whole progeny expresses the dominant trait (100% NN)If one parent is h0m0zyg0us dominant and the other one heter0zyg0us (NN x Nn), the whole progeny expresses the dominant trait (50%NN and 50%Nn).If one parent is h0m0zyg0us dominant and the other one h0m0zyg0us recessive (NN x nn), the whole progeny expresses the dominant trait (100% Nn).If both parents are heter0zyg0us (Nn x Nn), the offspring will express both phenotypes in a ratio 3:1 (25% NN + 50% Nn and 25% nn).If one parent is h0m0zyg0us recessive and the other one heter0zyg0us (nn x Nn), the offspring will express both phenotypes in a ratio 1:1 (50% Nn and 50% nn).If both parents are h0m0zyg0us recessive (nn x nn), the whole progeny will express the recessive trait (100% nn).Now let us analyze the crosses,
Cross 1: gray fur x black furF1) 3 gray fur: 2 black fur
You crossed a black animal with a gray animal and the offspring expresses both phenotypes. So the black animal (dominant phenotype) must be heter0zyg0us for coat color.
Parents' phenotype) gray and black
Parentals) nn x Nn
Alleles in Gametes) n n N n
Punnett square) N n
n Nn nn
n Nn nn
F1) Genotype
1/2 = 50% of the progeny is expected to be heter0zyg0us, Nn
1/2 = 50% of the progeny is expected to be h0m0zyg0us recessive nn
Phenotype
1/2 = 50% of the progeny is expected to be black -Nn-
1/2 = 50% of the progeny is expected to be gray -nn-
Cross 2: gray fur x black furF1) 0 gray fur: 5 black fur
You crossed a black animal with a gray animal and the offspring expresses only the dominant phenotypes. So the black animal must be h0m0zyg0us dominant for coat color.
Parents' phenotype) gray and black
Parentals) nn x NN
Alleles in Gametes) n n N N
Punnett square) N N
n Nn Nn
n Nn Nn
F1) Genotype
100% of the progeny is expected to be heter0zyg0us, Nn
Phenotype
100% of the progeny is expected to be black -Nn-
Remember that the Punnett square does not give you information about the number of individuals that can be produced. It just provide information about probabilities of getting individuals with certain genotype of phenotype and their frequencies.
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For each offspring genotype in the
Punnett square you just completed, determine the phenotype. In other
words, what is the predicted fur color and eye color of the offspring? Using your Punnett square from the
last step, fill in the predicted fraction for each phenotype in the data table below.
Black Fur and Black Fur and White Fur and White Fur and
Black Eyes
Red Eyes
Black Eyes
Red Eyes
Predicted Fraction
V16
/16
V16
/16
RETR Y OS
The Punnett square is not found here but, according to data, these genetic traits involve the expression of two different genes (proportion 1/16 in double recessive).
What is a Punnett square?A Punnett square is a diagram used in genetics to calculate the genotypic proportion from a given genetic cross.
Two different genes may generate 16 genetic (allelic) combinations in a Punnett square.
Moreover, fur color and eye color are phenotypic traits that depend on the recessive-dominance allele relationships received in offspring.
In conclusion, the Punnett square is not found here but, according to data, these genetic traits involve the expression of two different genes (proportion 1/16 in double recessive).
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Answer:
For each offspring genotype in the Punnett square you just completed, determine the phenotype. In other words, what is the predicted fur color and eye color of the offspring? Using your Punnett square from the last step, fill in the predicted fraction for each phenotype in the data table below.
Black Fur and Black Eyes Black Fur and Red Eyes White Fur and Black Eyes White Fur and Red Eyes
Predicted Fraction
1
⇒ 16/16
1
⇒ 0/16
1
⇒ 0/16
1
⇒ 0/16
Predicted Percentage
100
%
0
%
0
%
0
%
Finally, convert the predicted fractions into predicted percentages.
Explanation:
One tool scientists use to learn about the weather is radar. to use radar, a weather tower sends out radio waves and then detects the waves that are reflected back to the tower. how does radar tell scientists about the weather in a given area?
a. clouds at a higher temperature reflect more radio waves.
b. air at a lower pressure reflects fewer radio waves.
c. heavier rain or snow reflects more radio waves.
d. clouds that hold less moisture reflect more radio waves.
A radar can indicate to scientists the weather in a given area because rain or snow reflects more radio waves (Option C).
What is a weather radar?A weather radar is a device used in meteorology in order to predict weather conditions.
This device (weather radar) sends waves into the atmosphere in order to identify any type of precipitation.
In conclusion, a radar can indicate to scientists the weather in a given area because rain or snow reflects more radio waves (Option C).
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This part of a prokaryotic cell is a slime layer that helps cell stick things
Explain what type of ratio is needed to have maximum efficiency for the cel
Answer:
surface area to volume (SA:V) is the ratio that is needed to have maximum efficiency for the cell
Evidencia de los colonos de Washington
In what year did Oxford scientist Robert Brown discover the motion of small particles?
1880
1908
1987
1827
Please refer to the passage to
help you answer the problem.
What is the charge of the
electrical impulses sent from
stimuli?
A. Extremely positive
B. Exactly neutral
C. Negative
D. It depends on the location.
The charge of the electrical impulses sent from stimuli is extremely positive. Thus, the correct option is A. The net charge of such electrical impulses is positive because of the positively charged ions of the Na+.
What is an electrical impulse?An electrical impulse may be defined as a nerve impulse that contains an electrical signal which travels throughout the body by the axon terminal.
In the resting potential state, the potential difference is -80mV, while after reaching the electrical impulse it changes to +40mV. This happens due to an electrical imbalance between sodium and potassium influx and efflux.
Therefore, the correct option is A.
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Blood pumps through arteries due to contraction of the arterial walls but flows more freely through veins because there is little to no contraction. Based on this information, which would you expect to be present in higher quantities in arteries than in veins
Excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.
What are Excitable cells?Excitable cells are defined as those cells that are capable of generating electrical impulses when stimulated. Example of such cells include:
Neurons,muscle cells( smooth, skeletal and cardiac)Endocrine cells.The artery is made up of higher amount of smooth muscles than the veins therefore, excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.
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Which of the following best describes why in general there are more hares in the ecosystem than foxes.
In 1945 there was a major event that caused the number of hares to dramatically increase. That is why there continues to be more hares than foxes here.
Hares are a lot smaller than the foxes, so more of them can fit into different niches. They can hide better in all of the bushes and behind rocks.
This is because if only 10% of the energy gets passed on to the next trophic level, then you need to have more lower level animals available to support the animals higher up the food chain. The fox must eat several hares to gain enough energy for growth and development
Answer:
C
Explanation:
The reason why there are more hares than foxes in the ecosystem is because if only 10% of the energy gets passed on to the next trophic level, then you need to have more lower level animals available to supports the animals higher up the food chain. The fox must eat several hares to gain enough energy for growth and development.
Answer:
C: This is because if only 10% of the energy gets passed on to the next trophic level, then you need to have more lower-level animals available to support the animals higher up the food chain. The fox must eat several hares to gain enough energy for growth and development
Explanation:
How can something that happens in a terrestrial system affect an aquatic system? Give an example.
Answer:
Strong hydrologic connections among terrestrial and inland aquatic realms exist in both river floodplains and dryland ecosystems. In the evolution of river floodplains terrestrial vegetation diversifies inland aquatic habitats, providing a range of colonization options for different organisms
Explanation:
write three characteristics of fungi
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Fungi is single celled micro organism, which grows in plants or soil. Fungi can be mostly found on soil or dead plants or dead matter.
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[tex] \sf \red{Write \: three \: characteristics \: of \: fungi}[/tex]
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[tex]\green\star[/tex]Three characteristics of Fungi are:
Fungi reproduce through spores. Fungi are mostly Eukaryotic or single celled. Fungi can play major role in recycling.[tex] \boxed{ \frak \red{brainlysamurai}}[/tex]
As human populations have changed over the years, people have altered the course of rivers and other waterways to better suit their needs. one approach has been through the damming of certain rivers. over time, many people question whether this effort has been beneficial. what are the negative impacts of damming a river that are being assessed?
dams allow more water to flow into nearby reservoirs, increasing the chances of disease transmission.
dams cause increases in salmon populations because more water is available for them to live in.
dams reduce salmon stocks, which reduces revenue and overall whale populations.
dams allow for invasive species to move around more easily, which reduces biodiversity.
Dams allowing more water to flow into nearby reservoirs thereby increasing the chances of disease transmission is its negative impact and is denoted as option A.
What is a Dam?This is a form of barrier which restricts the flow of water for different reasons such as reservoirs, electricity generation etc.
Since the water flows to reservoirs in close proximity, it increases the risk of disease transmission such as malaria etc.
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How does water cycles involve biotic and abiotic factors?
Answer:
This recycling process involves both the living organisms (biotic components) and nonliving things (abiotic factors) in the ecosystem. Through biogeochemical cycles, water and other chemical elements are constantly being passed through living organisms to non-living matter and back again, over and over.
Explanation:
What are other producers besides plants
Answer:
bacteria,moss and algae
What is the maximum magnification of most classroom compound light microscopes?
A. 100x
B. 500x
C. 1,000x
D. 5,000x
Answer:
1,000x is the answer you’re looking for! hope this helps :).!
Explanation:
Why is it a good idea to study experimental subjects in their natural environment? OA. So that a specific problem can be solved as quickly as possible OB. So that the experiment is cheaper and easier to conduct C. So that they respond to the test as they would under normal conditions O D. So that no one else will know what is being studied
plase help and thanks.
ANSWER FAST PLS! (For a project) State and describe three different ways that agricultural engineering (machines, tools, irrigation systems, pesticides, fertilizers, genetic modification) could be applied to help reduce the loss of wheat crops in drought conditions.
Use complete sentences, proper capitalization & punctuation
Have 3 sentences telling 3 different ways to help with the wheat crop during a drought
Irrigation is an artificial technology that helps to obtain water and thus recover the loss in extensive (wheat) crops.
What is irrigation?Irrigation is a technology based on the artificial supply of water to recover crops from drought conditions.
Genetic modification may also help with drought conditions by inserting into the genome of the target species gene sequences associated with hydric stress (e.g., a protein channel to close stomata at night).
In conclusion, irrigation is an artificial technology that helps to obtain water and thus recover the loss in extensive (wheat) crops.
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A scientist is studying an aquarium ecosystem that contains water, plants, and fish that eat those plants. The aquarium has glass walls so light can get in, but it is sealed so no material can move into or out of the tank. When the scientist turned the aquarium's light on, carbon dioxide in the water started decreasing. How is carbon moving and what is happening to the amount of carbon in the living things inside the aquarium? Explain your thinking as completely as possible.
PLEASE PLEASE PLEASE CAN SOMEONE HELP ME WITH THIS QUESTION!!!
IT'S DUE IN LESS THAN 15 MINUTES
Carbon moving and what is happening to the amount of carbon in the living things inside the aquarium is by photosynthesis.
What is aquarium?
An aquarium (plural aquariums or aquaria) is a vivarium, usually contained in a clear-sided container (typically constructed of glass or high-strength plastic) in which water-dwelling plants and animals (usually fish).
According to this question, the aquarium contains water, plants and fish. The glass of the aquarium is transparent and allows the passage of light. Plants are unique set of organisms that have the ability to produce their own food (organic molecule) using the energy from light which they absorb via the Chlorophyll pigment in their Chloroplast. This process carried out by plants is called PHOTOSYNTHESIS.
The amount of carbon in form of carbondioxide (CO2) decreases when the light was switched on in the aquarium due to the process of photosynthesis carried out by the plants.
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What is a chromosome?
Answer:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Explanation:
Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus. DNA is coiled around proteins called histones, which provide the structural support. Chromosomes help ensure that DNA is replicated and distributed appropriately during cell division.
Answer: A chromosome is a thread-like structure made up of DNA. Chromosomes are found in the nucleus of each cell
or just DNA makes up a chromosome
Explanation:
hope this help
PLEASE HELP!!!!
4. Describe the design solution engineers and scientists developed to prevent contamination of Cleveland drinking water. Why did their solution need to address both sub-problems equally?
Cleveland drinking water is treated to ensure safety before its consumption (this process involves the removal of debris, flocculation, etc).
What is water treatment?Water treatment refers to the strategies aimed at enhancing water quality to be consumed and/or used in agriculture.
Cleveland water experience a complex process that involves the removal of debris, flocculation, filtration, etc.
In conclusion, Cleveland drinking water is treated to ensure safety before consumption (this process involves the removal of debris, flocculation, etc).
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If you have black hair and
someone else.has red hair these
are two versions of the same
gene, what is this called
scientifically?
Answer:
Codominance
Explanation:
In genetics, codominance refers to a type of inheritance in which two variants (alleles) of the same gene are expressed differently in one individual, resulting in different phenotypes.
The Arctic Ocean is considered part of
the
A. atmosphere.
B. troposphere.
C. lithosphere.
D. hydrosphere.
Answer:
i think A: atmosphere is the ans
The Arctic Ocean can be considered a fundamental part or player of the hydrosphere (Option D).
What is the hydrosphere?Hydrosphere refers to all water bodies present on the Earth, including oceans such as the Arctic Ocean.
This part of Earth (hydrosphere) plays a fundamental role in the homeostasis or state of equilibrium of the ecosystems.
In conclusion, the Arctic Ocean can be considered a fundamental part or player of the hydrosphere (Option D).
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Usually the body needs to excrete excess acid. sometimes, however, the body is in alkalosis. in the collecting duct, there are special cells (type b intercalated cells) whose sole job is to deal with alkalosis. what would you expect these cells to do
The type b intercalated cells will reduce the amount of bicarbonate ion secreted and the amount of hydrogen ions excreted by the body in order to deal with alkalosis.
What is alkalosis?Alkalosis is a condition in which excess alkali is present in the blood.
Alkalosis occurs when the body exceeds excess alkali in from the body.
Therefore, the type b intercalated cells will reduce the amount of bicarbonate ions secreted and the amount of hydrogen ions excreted by the body in order to deal with alkalosis.
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ANSWER FAST PLEASE!!!!!
Look at the diagram below.
Ray 1 from the Sun moves through air and falls on the surface of a lake. Ray 2 is a ray which travels from the surface of the lake at the point Ray 1 strikes the lake, and moves towards air. Ray 1 and Ray 2 make the same angle with the surface of the lake. Ray 1 bends towards the vertical when it enters the lake as Ray 3
Which statement is correct about Ray 1?
Ray 1 from the Sun is the incident ray which is first refracted and then is reflected off the water surface as Ray 2.
What are rays of light?Rays of light are packets of light which travel together in a straight line.
Light rays just like other waves can be reflected, refracted, diffracted, and polarized.
The ray of light Ray 1 from the Sun is the incident ray.
Ray 2 that leaves the water surface is the reflected ray..
Therefore, Ray 1 from the Sun is the incident ray which is refracted and then is reflected off the water surface as Ray 2.
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Answer: ray 2 is the reflected ray
Explanation:
A club fungus has an erect, above-ground fruiting body and long, branching, underground hyphae.
A club fungus has a thick stem and an umbrella top-shaped head having many irregular-shaped particles spread all over the head.
How do the structures of the fruiting body and hyphae relate to their functions?
Answer:The fruiting body is tall to maximize photosynthesis, while the hyphae are branched to support the release of waste products.
Explanation:I took the test and had the question.
What would be the percentage of Thymine (T) based on the following data
of wheat DNA:
A%= 27.3 C %= 22.7 G%=22.8 T%=??
Answer:
T%=27.2
Explanation:
This is because if you add 27.2% to the percentages given on the statement it all adds up 100% or A and T must equal to the same or close percentage as they are complementary to each other
Although the integument is a covering, it is by no means simple, and some of its functions include Group of answer choices epidermal blood vessels serving as a blood reservoir. the dermis providing the major mechanical barrier to chemicals, water and other external substances resident macrophage-like cells whose function is to ingest foreign invaders and present them to the immune system cooling the body by increasing the action of sebaceous glands during high temperature conditions
The functions of the integument include resident macrophage-like cells that ingest foreign invaders and present them to the immune system.
What is the integumentary system?The integumentary system is a physical barrier that separates the body from the external environment.
This barrier (integumentary system) is fundamental for the immune system due to the presence of macrophage-like cells.
In conclusion, the functions of the integument include resident macrophage-like cells that ingest foreign invaders and present them to the immune system.
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Answer:
Explanation:
What is a feedback mechanism?
What is a feedback mechanism?
A feedback mechanism is a physiological regulation system in a living body that works to return the body to its normal internal state, or commonly known as homeostasis. In nature, feedback mechanisms can be found in a variety of environments and animal types. Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to feed back into itself.
Examples:
Menstrual cycle. At the beginning of the menstrual cycle, the ovaries release the hormone estrogen. The estrogen acts as a stimulus for the positive feedback loop. ...Childbirth. Figure: Normal childbirth is driven by a positive feedback loop.
90 POINTS! PLEASE HURRY! Analyze this graph and fill in the blanks with the correct response.