A wheat plant that is light green in color is found growing in a field. Biochemical analysis reveals that chloroplasts in this plant produce only 50% of the chlorophyll normally found in wheat chloroplasts. Propose a set of crosses to determine whether the light-green phenotype is caused by a mutation in a nuclear gene or in a chloroplast gene.

Answers

Answer 1

Answer:

Set of crosses:

Wild-type male x light-green female  

Light-green male x wild-type female

Explanation:

Chloroplast genes are inherited maternally and, therefore it would be expected to observe this mode of inheritance:

- Wild-type male x light-green female >> offspring 100% light green  

- Light-green male x wild-type female >> offspring 100 % wild-type

Moreover, nuclear genes are inherited from both parents, and, therefore, in the case of complete dominance, it would be expected to observe the following results:

1- When wild type is dominant:

- Wild-type male x light-green female >> offspring 100% wild type

- Light-green male x wild-type female >> offspring 100% wild-type

2- When light-green is dominant:

- Wild-type male x light-green female >> offspring 100% light-green

- Light-green male x wild-type female >> offspring 100% light green


Related Questions

help asap!!!!Nyah accurately explains to Arman the importance of consumers in an ecosystem.
Which sentences should she use in her explanation? Select all that apply.
A. An ecosystem cannot function without consumers.
B. Herbivores are food for carnivores and omnivores.
C. Consumers in an ecosystem may be herbivores or carnivores.
D. Most ecosystems have only one type of consumer.
E. The same types of consumers are found in different ecosystems.

Answers

Answer:

The answer is definitely A

A, B, and C
A - An ecosystem cannot function without consumers because if there were sheep and foxes the sheep would keep reproducing with no one to keep their population low and would eventually eat all their food. An ecosystem needs to balance consumers, predators, and omnivores
B - Herbivores eat plants only, but usually the carnivores and omnivores eat them as their food and lower their population
C - Yes, consumers are species that consume another. They could be consuming plants or consuming another species
It’s not D or E
D - Ecosystems are made up of different types of species and they’re not made up of one consumer it’s a complex system where everything balances
E - Different ecosystems are made up of different species for example you won’t find fish in a land ecosystem and you won’t find wolves in an underwater ecosystem.

The plants in the chaparral biome are __________.
A)
widely spaced to maximize water collection
B)
closely spaced to form dense ground cover
C)
generally deciduous
D)
adapted to heavy snowfall

Answers

Answer:

B) closely spaced to form dense ground cover

Explanation:

Just took the quiz and it was correct!

what is your role in maintaing the fertility status of our agriculture​

Answers

Answer:

Soil fertility and nutrient management is one of the important factors that have a direct impact on crop yield and quality. Irrespective of the size of your field or plot, supplying plants with the right amount of nutrients at the right time is the key to a successful vegetable production enterprise.

Answer:

Microorganisms such as bacteria and fungi play an important role in maintaining the soil fertility. Microbial action on dead organic matter releases nutrients in the soil raising the fertility status of the soil.... raise the niteogen status of the soil by fixing atmospheric nitrogen

Brainly involved! :) Why is studying animals in the wild considered to be somewhat experimentally "out of control"?
A) There are many factors that cannot be controlled that could influence the study.
B) It does not take place in a laboratory and is therefore not a valid experiment.
C) The test subjects are not trained to behave in a certain manner.
D) The experimenters are as careful with recording their results.

Answers

Answer:

Hmmm i tied between A and C because they both seem correct but since C sounds a little off ima say A  

Explanation:

Answer:

A)

Explanation:

Other answers seem to appear only partially correct or not correct at all. If there's anything unclear, feel free to ask.

The number of_____in the nucleus is also known as the____number. ​

Answers

Answer:

The mass number also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus.

Answer:

The number of Protons and Neutrons in the nucleus is also known as the Covalent bonds.

Hope I helped!

What is the effect of the color of light (red, green, or blue) on how high plants grow?
1) Identify the IV:
2) Identify the DV:
3) Identify important CVs:
4) Write a hypothesis (fill in the format below; refer to the short reading on the next page for ideas for the because):
If , then , because .
5) Write a procedure that would help answer the experimental question.
Materials Needed:

Answers

Answer:

Explanation:

On a scratch sheet of paper, complete the Punnett square of the cross between two heterozygous red-eyed flies (Rr). What color eyes will the offspring have?

Answers

Answer:

75% red, 25% other color (brown?)

Explanation:

A cross between two heterozygous red eye flies (Rr x Rr)

                     R                     r

R                  RR                   Rr

r                   Rr                   rr

The possible genotypes are RR, Rr, and rr. There are two possibilities of Rr.

Since the heterozygotes have red eyes, the red eye allele must be dominant. Therefore, RR and Rr genotypes will all have red eyes. That means 3/4 (75%) of offspring will have red eyes. 1/4 25% are h0m0zygous recessive (rr), and will therefore have the other eye color (question doesn't mention which colour this is, it is likely brown)

What is water an example of

Answers

Answer:

Water as a Molecule and Compound

Explanation:

When two atoms form a chemical bond, they make a molecule. Hydrogen and oxygen are both elements, but they also normally exist as molecules consisting of two atoms (H2 and O2). Because hydrogen forms bonds with oxygen to make water, water is a molecule. Water is also a compound.

Explanation:

A liquid

H2O

Which organelle acts as the cells command center?
-Nucleus
-Ribosomes
-clole
-Chloroplasts
-Lysosomes

Answers

Answer:

nucleus

Explanation:

If algae populations continue to decline, predict how this might impact the Great Barrier Reef food web.

Answers

Answer: the food web would crash.

Explanation: the great barrier reef's diversity would decline more and then the food web would crash since algae was the primary source, no ecosystem can live without a primary source to feed off of to gain energy and grow

Great barrier reef food web protects the coastline and is house to thousands of species. Algae is the primary producer on which the entire food web is based. If it continues to decline, ecosystem will crash.



What do you understand by Great Barrier reef food web ?

The biggest coral reef in the world is the Great Barrier Reef. It is situated on Australia's northeastern coast. With a length of 1429 miles and more than 9,000 species, the Great Barrier Reef is enormous. One of the most biodiverse places on the globe, it. Over 3,000 different varieties of coral may be found on the Great Barrier Reef, yet despite supporting such a diverse range of life, the reef is threatened by climate change. Coral bleaching, which harms reefs and the creatures that dwell there, is being caused by changing temperatures and rising carbon dioxide levels.


A food web is a visual representation of how energy moves through an ecosystem. Food webs reveal which creatures in an environment devour one another. Trophic levels are divisions that can be made within food webs. Producers always come first in food webs.


Therefore, if algae (Primary producer)  population continues to decline Great Barrier Reef food web will have a crash landing.

Learn more about Food web, here:
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Describe the changes that a country undergoes as it passes through the three stages of the demographic transition. Use the United States as an example.

Answers


In stage 1, both birthrate and death rate are high, and the population grows slowly. Stage 1 describes the US for the early years of history. Then during Stage 2, improvements in health care, sanitation, and nutrition all people to live longer and reduce the death rate. The birthrate however, remains high during this stage so the population increases rapidly. This occurred in the US in the 1800s. Eventually, birthrate decreases to match the low death rate and the population growth slows and eventually stops. This is the US today.

can the brain repair itself

Answers

Answer:

Yes

Explanation:

After a traumatic brain injury, it sometimes happens that the brain can repair itself, building new brain cells to replace damaged ones. But the repair doesn't happen quickly enough to allow recovery from degenerative conditions like motor neuron disease

Helpppppppppppppppplllpl

Answers

Answer:

c

Explana:

Just because that planet does not have the kind of gravity we have and the atmosphere can trap heat but to make a green house effect you will need time.

This picture shows the weather station model at a location.

Image shows a weather symbol with the following attributes: In the center is a circle that is entirely black. Surrounding this circle are several other symbols and numbers. To the left of the circle is a symbol that consists of three small black dots. In the upper-left corner of the model is the number 57; In the upper-right corner of the model is the number 107; In the lower-left corner of the model is the number 56; in the lower right corner of the model is the number -6. A line segment runs from the central circle through the upper left corner of the model; two smaller line segments - one larger than the other - connect to this line segment to form an 'F'.

What type of weather is expected at the location?

fog
haze
rain
thunderstorm

Answers

Answer:

thunderstorm  

Explanation:

In this location, a thunderstorm is expected, a thunderstorm is a small-scale storm that includes both thunder and lightning.

What is a thunderstorm?

Some thunderstorms have a chance of producing hail and/or tornadoes. Localized heavy snow showers during the winter may also include thunder and lightning. Additionally, it frequently delivers heavy rain as well as violent gusts.

Thunderstorms are ferocious, brief meteorological disturbances that are nearly always accompanied by lightning, thunder, thick clouds, significant amounts of rain or hail, and strong gusts of wind.

Layers of warm, moist air rise in a strong updraft to cooler areas of the atmosphere, whereupon thunderstorms form.

Therefore, according to all directions shown in the image thunderstorm weather is expected at the location.

Learn more about thunderstorms, here:

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What is the elevation for points
A
B
C
D
X

Answers

Answer:

The highest elevation would be x the lowest would be c

ASAP What is the main negative effect of slash and burn deforestation in rain forests?
1. A rapid increase of carbon dioxide, faster than photosynthesis can remove the CO₂
2.The erosion of thin, fragile tropical topsoils
3. Heavy smoke in the air causes respiration problems for humans
4. Bare land warms absorbs heat and warms the surrounding air faster than forested areas.

Answers

4. How can managers strike a balance between transactional and transformational leadership?
an advantage to a business organization

Mrs. Erica Jackson realized that something was wrong with her child’s skin. She found that holding her child caused severe blisters to form. The blisters broke, became infected, scarred, and eventually the child’s fingers fused together. What disorder did the child have? Is it genetic? What are the treatments?

Answers

Answer: Epidermolysis bullosa. It is genetic.

Explanation:

The disorder that the child have is referred to as epidermolysis bullosa. It is a disorder of the connective tissue and it's genetic. The disease causes blisters on the skin of an infected person.

Some of the treatments for epidermolysis bullosa include:

• Cell based therapies.

• Protein replacement therapies.

• Gene therapy.

• Bone marrow transplantation.

2. Could gene therapy someday cure the common cold? Why or why not?

Answers

Answer:

No, it sadly would not be able to do so. Gene therapy cures genetic disorders, so something you were born with. A cold is something you would catch.

Explanation:

No, it sadly would not be able to do so. Gene therapy cures genetic disorders, so something you were born with. A cold is something you would catch.

How many chromosomes will be found in
each of the two new cells formed as a result
of mitotic cell division?

Answers

At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes. At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes.

23 pairs of chromosomes will be found in each of the two new cells formed as a result of mitotic cell division.

WHAT IS MITOSIS:

Mitosis is a kind of cell division that results in the formation of two daughter cells with the same number of chromosomes as the parent cell.

Mitosis is used for growth and tissue repair in living organisms. In mitosis, a parent cell divides into two new daughter cells, however, each cell possess the same number of chromosomes as the parent.

In a somatic human cell, there are 23 pairs of chromosomes (46 chromosomes). If this cell undergoes mitotic division, then, there will be 23 pairs of chromosomes in each cell formed.

Learn more: https://brainly.com/question/3327479?referrer=searchResults

Two types of worms exist in London. One which comes out during the day and the other which come out at night. The day worms are eaten more often by the birds.

i) After a few years only night worms existed in the region. Why? (2)

ii) What kind of selection has taken place? (1)

Answers

i) Because the worms would have either learned to become night worms or all day worms would have been eaten faster than they could reproduce

ii) Natural selection. Humans had no interaction with which worms survived, so it's all natural.

I hope this helps! Good luck!

How did Claire's digestion reaction weights tell you that the problem was in her small intestine, and not in her stomach

Answers

Answer:

The reaction rate of the digestion helps in understanding which part of the digestive system having trouble in digestion especialy stomach and intenstine related.

It involves the fact that most of the enrgy or calories are get by the small intestine and also vitamins and minerals are absorbed by this part of the digestive system so if the small intestine is having problem the rate of digestion would be affected and and an individual could be malabosrbed.

If the problem lies in the stomach  it might show some effects of a poor digestion, however the rate of digestion would be better than if the problem lies in the small intestine.

DNA provides a very significant role in the formation and development of an organism.what is that role?

Answers

Answer:

The significant role that DNA provides is the organism's genetic information. It stores its information inside, and that's what makes up all the traits of the organism. All known cellular life contains DNA for this reason, and basically serves as long-term storage of information about the organism.

PLSSS HELP!
What are three land-use practices that contribute to surface erosion by water?

Answers

Sorry that person didn’t help but your answer is

removal of vegetation, production of paper, construction production, and agricultural production

Answer:

hi

Explanation:

IM A BIG DOG BIG BEAR NI- i cant say that...

Which organising consume dead organic matter

Answers

Answer:

saprophytes are responsible for consumption of decay or decid matter

How many molecules are in C6H1202

Answers

Answer:

There are 20.

Explanation:

Answer:

20 molecules

Explanation:

Hope this helps :)

Many organisms can reproduce asexually through mitosis, while other organisms reproduce sexually, and their cells carry out meiosis to form gamers. In situation where an organisms fall prey to many efficient predators, which of these processes would be most beneficial

Answers

Answer:

The answer is meiosis

Explanation:

Mitosis results in daughter cells with the same genetic component as the parent. Hence, a drastic change in the environment may wipe out the entire population of organisms that only reproduce by mitosis.

From the video segment about crows in Japan:
What mechanism did the crows use to crack open the nuts for food?

Answers

Answer:

is this ur fist time doing this?

Explanation:

can i know a little more about this pls then i might be able to help!

Explain how the structure of sperm cells is related to their function.

Please answer I will give brainliest to the first correct answer!

Answers

The head contains the genetic material for fertilisation in a haploid nucleus. The acrosome in the head contains enzymes so that a sperm can penetrate an egg. The middle piece is packed with mitochondria to release energy needed to swim and fertilise the egg. The tail enables the sperm to swim.

The structure of sperm cells as it relates to their function are:

The head: It helps carry the genetic information to the haploid nucleusThe acrosome: It helps the sperm enter the egg of the femaleThe middle piece: It is responsible for the release of energyThe tail: It helps the sperm to swim

A sperm cell is the male sex cell which is responsible for reproduction as it fuses with the female gamete and forms a zygote through fertilization.

As a result of this, there are different processes which are required for fertilization to occur as the sperm cell has to move through the head and fertilize with the ovule to form a new cell, called zygote.

Read more here:

https://brainly.com/question/16760288

There are ____ amino acids?

1
10
20
40
50
100
an infinite number of

Answers

Answer:

there are 20 amino acids

What kind of rock is shown in the picture ?
How do you know what type of rock it is ?

Answers

Answer:

Sedimentary

Because it is made is sediments

Explanation:

got it right , edge 2020

The picture shown here is of sedimentary rock. It is visible so because of the identification features of a rock as shown in the image.

What is the formation of rock making process ?

The process is that the soil and the sand that gets accumulated and together with the mud gets collected in order to form a hard mass by the passing of time called as rock.

The kind of rock identification is done on the basis of rock identification aspects that are decided for each type of rock that has been kept under observation. In sedimentary rock, the grains and the displacement of rock grains together gives a larger or smaller appearances.

The types of layers and mud particles joined together along with the ripple marks that have been put together shows the marks on the rocks.

Learn more about sedimentary rock at :

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