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A dominant gene that codes for white hair is represented by the symbol W. If a parent with the genotype WW is crossed with a parent of genotype Ww, what percent of their offspring will have white hair?
A. 25%
B. 50%
C. 75%
D. 100%
Answer:
D
Explanation:
Seeing as the gene is dominate, the hair would still be white evening it's Ww. For the hair to be a different color both parent would need a recessive gene (w), though neither does, meaning all the kids would have white hair.
From this diagram of fossils (sorry it’s a bit blurry) which layer is the youngest and which layer is the oldest? How do you know?
Answer:
The bottom layer is the oldest, and the top layer is the youngest
Explanation:
As time goes on more and more sediment gets piled onto a certain place, meaning the oldest fossils will keep getting deeper and deeper
If an object is stationary, it means....
A) There are balanced forces acting on the object
B) There are unbalanced forces acting on the object
C) The object is in motion
D) The object is experiencing air resistance
what hereditary factors affect ones growths
You put a cat in an open cage with cat food, water, and a litter box (where the cat poops and urinates). The cage cat water food litter box weighs 2000 grams. Two weeks later, the cat has eaten all the food, has drunk all the water, and has grown a little bit bigger. The cat's waste (urine and poop) is still in the litter box. How much would you expect the cage cat litter box with poop and urine to weigh now
Answer:
it would weigh more than before
Explanation:
Freshwater ecosystems can be grouped as those that are still, those that are flowing, and those that contain salt.
Answer:
true
Explanation:
what is the function of myonemes in the euglena
Myoneme FUNCTION in Eugene viridis as the contractile vacuole in the organism. In order words, it helps in the excretion of substance out of the body of the organism
MyonemeA myoneme is a contractile structure found in some eukaryotic organisms like euglena too.
The myoneme consists of a series of protein filaments that shorten rapidly upon exposure to calcium.
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identify two other physical factors and explain their effect on the organism living in the lake?
Answer:
The correct answer is - light level and temperature.
Explanation:
The structure and function of lakes are determined by various factors such as temperature, light level, wind turbulence, water flow rate, dissolved oxygen, acidity (pH), salinity, habitat size, hydrology, and water depth. Stratification and water circulations are influenced by temperature and wind turbulence.
Light level is an important abiotic factor in lake ecosystems. Light is an essential part for plants to perform photosynthesis. Light can directly affect how much life you find in a given area depends on the production of energy and food by the aquatic plants by photosynthesis.
Temperature is a similarly important factor for lakes or other aquatic organisms as it is for land animals. each organism is able to survive in specific temperature ranges and their metabolic activity also depends on the specific temperature range.
cuál es el límite entre la cavidad torácica y abdominal?
Answer:
El diafragma es un músculo en forma de cúpula que separa la cavidad torácica (pulmones y corazón) de la cavidad abdominal (intestinos, estómago, hígado, etc.).
Explanation:
in some flowers, red and white color is codominant. Flowers and be red ( RR), white (rr) or pink (Rr) if two pink flowers are crossed! what percentage of the offspring will also be pink ?
Answer:
50%
Explanation:
If you do a punnet square you get 1 RR: 2 Rr: 1rr
Carrying capacity is Group of answer choices seldom reached by marine producers and consumers because of the vast resources of the ocean. the maximum population size that a particular environment can support. fixed for most species over most of their range most of the time. the term used to describe the stress a population undergoes due to limited resources.
Answer:
the maximum population size that a particular environment can support.
Explanation:
A population can be defined as the total number of living organisms living together in a particular place and sharing certain characteristics in common.
Generally, these populations may be divided into a fraction of the population (subpopulation) based on certain factors and reasons.
Population regulation can be defined as a biological process that balances limiting factors affecting the growth of a population based on density. The factors that regulate the growth of a population are divided into two (2) main categories and these includes;
I. Density-independent factors.
II. Density-dependent factors.
Density-dependent are regulating factors such as predation, diseases, and competition that affect the size of the population of living organisms through decreasing or increasing mortality and birth rate.
Furthermore, density-independent factors do not have an increasingly greater effect as a population's density increases. Thus, its effect are reduced as a population's density increases in size.
Carrying capacity is the maximum population size that a particular environment can support. The carrying capacity of an environment is denoted by the letter k.
Drag a number and symbol to represent the amount of time Carl worked on problems.
___ ___ ____
Answer:
25 - m
Explanation:
If Carl worked m less than 25, 25 - m would represent the amount of time Davis worked minus the difference in the amount of time that he and Carl worked, which would equal the amount of time Carl worked.
Which of the following defines an ecological succession
Answer:Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time. The structure of this community becomes more complex as new species arrive on the scene.
Explanation:
Question 6
Below which of the following pH is rain regarded as 'acid rain'?
10
6
9
7
Answer:
10
Explanation:
Which statement best describes the relationship between protein, amino acids, and DNA? (1 point)
O DNA codes for proteins. Proteins are made up of amino acids.
O Amino acids code for DNA. DNA is made up of protein.
O DNA codes for amino acids Amino acids are made up of proteins.
O Amino acids code for protein. Protein is made up of DNA.
Answer:
Explanation:
The major relationship between protein and nucleic acid is the reproduction of DNA which contains the information on how cells are used together with RNA which helps to make protein. Both nucleic acid and protein they have four biomolecules which are common in both of them.
Short answer: Using a binary code, genes (DNA) specify how proteins (among other things) are to be synthesized.
Analogy: If DNA is a cooking book, genes are recipes, and proteins the dishes resulting from processing the recipe ingredients.
The relationship between protein, amino acids, and DNA is defined by the DNA codes for proteins. Proteins are made up of amino acids.As DNA codes for proteins.
DNA, RNA, and protein are all intently related. DNA carries the records vital for encoding proteins, even though it does now no longer produce proteins directly. RNA includes the records from the DNA and transforms that records into proteins that carry out maximum cell functions.
What is DNA function?The essential process of DNA is to make the proteins that residing matters want to grow.
Thus it is well explained.
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Freshwater plants that have adapted to very moist conditions live in which type of biome?
an estuary
coral reefs
the ocean
a wetland
Answer:
A wetland
Explanation:
All the others are salt water
Answer:
wetland
Explanation:
A researcher is curious if Bt resistant bollworms are susceptible to an insecticide called DDT. Bollworms susceptible to Bt have genotype RR or Rr, whereas those resistant to Bt have genotype rr. Bollworms susceptible to DDT have genotype tt, whereas bollworms resistant to DDT have genotypes Tt or TT. In an effort to better understand how these two genes are inherited, the researcher crosses an RR tt bollworm with an rr TT bollworm to produce the F1 generation. Then, the researcher crosses the F1 generation to produce an F2 generation. What proportion of the F2 generation is resistant to both Bt and DDT
Answer:
The correct answer is - 3/16 or 18.75% portion will be resistant to both Bt and DDT.
Explanation:
It is given that bollworms that are susceptible to Bt are represented by either RR or Rr and resistance one are shown by rr genotype and bollworms that are resistant to DDT are represent TT or Tt genotype and susceptible to DDT have tt genotype.
Cross: RR tt with rr TT
Gametes: Rt and rT
F1 cross:
RT
rT RrTt ( susceptible Bt and resistant DDT)
F1 Cross with F1
Gametes: RT, Rt, rT and rt
cross:
RT Rt rT rt
RT RRTT RRTt RrTT RrTt
Rt RRTt RRtt RrTt RrTt
rT RrTT RrTt rrTt rrTt
rt RrTt Rrtt rrTt rrtt
The bold genotypes are the three out of 16 that are resistant to both DDT and Bt.
River dolphins are morphologically distinct from other dolphins and are primarily restricted to freshwater ecosystems in Asia and South America.
a. True
b. False
Answer:
a. True
Explanation:
The river dolphin is a group of aquatic animals that is specially adapted to the fresh water and are relatively smaller compared to the other dolphins. They have evolved to survive in shallow waters and strong-river currents. These dolphins are not very widely disturbed and are found in certain deltas and rivers.Which step of protein synthesis does the lac operon stop and how ?
Answer:
Explanation:
The phospholipid bilayer, shown below, that makes up the cell membrane is partially permeable . This means that it selectively prevents large, polar molecules and certain ions from passing into or out of the cell. Transport proteins are therefore used to move them, essentially by-passing the membrane.
HELP ASAP PLEASE
A natural resource is best defined as any naturally occurring material that is which of the following?
A. Used by people
B. Mined from Earth
C. Unlimited in quantity
D. Left untouched in nature
Answer:
The correct answer is B
Explanation:
A natural resource will always come from nature and it can be used for economic gain.
Yes, they can be used by people, but so can other resources, so the answer is not A.
Not all natural resources are unlimited, such as coal, are unlimited in quantity, so the answer is not C
Lastly, we do not leave natural resources untouched; we use them, so the answer is not D.
Please give me brainliest if I helped!
Letter A represents a wave's _____.
A. wave height
B. crest
C. wavelength
D. trough
Biomes are effected by temperature and precipitation. Please choose one other abiotic factor that would
affect species distribution and briefly describe how it would affect that distribution.
Answer:
climate / it would affect the distribution by affecting the soil making the species move to a different location
Explanation:
The Pine Tree shown below is a common gymnosperm. Name three adaptations this tree has that allow it to live on land
A waxy cuticle that covers the outer surface of the plant and prevents drying out through evaporation. The cuticle also partially protects against radiation damage from UV light.
Stomata (singular: stoma) are present in all land plant lineages except liverworts (similar to -but not the same as! – mosses). Stomata are pores or holes which allow for exchange of gasses (such as oxygen and carbon dioxide) between the plant cells and the environment. Stomata or similar structures are necessary in land plants because the waxy cuticle blocks free-flow of gasses.
Roots (or root-like structures) anchor plants to the soil and—in plants with true roots— serve as conduits for water absorption. All land plants except Bryophytes (mosses, liverworts, and hornworts) have true roots. Bryophytes have root-like structures called rhizoids that anchor them to their substrate but are not involved in water absorption (which is less important for Bryophytes because they can only survive in very moist environments).
Mutualistic association with mycorrhizal fungi, which are tightly associated with plant roots. Mychorrhizal fungi are associated with approximately 80% of all land plant species and provide additional surface area for absorption of both water and nutrients from the soil. The fungi share these resources with the plant roots, and—in exchange— the plant shares photosynthetic sugar products with the fungi.
The alternation of generations life cycle, which includes both a multicellular haploid stage and a multicellular diploid stage. Why is this an adaptation to life on land? It isn’t, in and of itself—in fact, it also occurs in *some* green algae, which are aquatic but share a common ancestor with all land plants. But specific adaptations to the alternation of generations life cycle have occurred in different lineages of plants, and those adaptations DO function as adaptations to life on land. We’ll consider these adaptations later in this reading.
These are from my text book, from last year.
Answer:
It has cuticle, a waxy, airtight seal that covers plants and allows them to retain water.
It has seeds, plant embryos without a protective cover on the scales of a cone which allows them to disperse into new locations.
It has pollen, but it is not produced in flowers, which allows it to reproduce without the need of water.
Explanation:
Which of the following could alter the expression of genes in an organism?
Select one:
Large numbers of cells being produced at one time.
The deactivation of a particular chromosome in the nucleus.
The loss of cytoplasm from inside of the cell.
A change in the sequence of nitrogen bases in the DNA.
why the initial cost of production of GMO is high
Explanation:
because it requires more scientific research than non-GMO
Would you mind answering this one
Which fact supports the conclusion that it is important for handlers to perform regular visual inspections of livestock?
O Some diseases that affect animals can be passed on to humans.
O Viral diseases are often spread through the air and on surfaces.
O Extemal parasites can cause serious infections if left untreated.
O Bacterial infections are often caused by unsanitary environments.
please help quick
Answer:
O Extemal parasites can cause serious infections if left untreated.
The human body is made up of several organ systems that work as a unit to allow the body to function properly. When the body is invaded by the E. coli bacteria from ingesting undercooked meat, a person will likely experience diarrhea, nausea, and vomiting. Which of the following system failed to do its job?
(I’ll give brainliest)
A. Digestive System
B. Excretory System
C. Nervous System
D. Immune System
What is Castration and give me the types of castration
Answer:
Castration is any action, surgical, chemical, or otherwise, by which an individual loses use of the testicles. Castration may be accomplished by physical, chemical or hormonal techniques. Testicles may be removed surgically or killed by obstructing the blood supply. Young calves may be castrated with rubber rings.
The relationship between the remora and the shark is an example of - (5.5)
A predation
B commensalism
C parasitism
D mutualism
What Is Systolic Blood Pressure?
Answer:
It is the pressure when the heart pushes blood out . The number when pressure is checked written on the top is the systolic pressure of the heart .
Explanation:
Hope it helps you dear :)
Good afternoon !
Answer:
Blood pressure is the pressure of circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term "blood pressure" refers to the pressure in the large arteries.
Range:-
What is high blood pressure (hypertension)?
Blood Pressure Levels
Normal systolic: less than 120 mm Hg diastolic: less than 80 mm Hg.
At Risk (prehypertension) systolic: 120–139 mm Hg diastolic: 80–89 mm Hg.
High Blood Pressure (hypertension) systolic: 140 mm Hg or higher diastolic: 90 mm Hg or higher.
Units:-
Blood pressure is measured in units of millimeters of mercury (mmHg). The readings are always given in pairs, with the upper (systolic) value first, followed by the lower (diastolic) value.