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OleMash [197]
3 years ago
7

In chickens, congenital baldness results from a Z-linked recessive gene. A bald rooster is mated with a normal hen. The Fi from

this corss are interbred to produce the F2.. The F2 progeny will include?
A. only normal roosters & hens

B. only bald roosters & hens

C. only normal roosters & bald hens

D. only bald roosters & normal hens

E. normal roosters & hens and bald roosters & hens
Biology
1 answer:
yanalaym [24]3 years ago
6 0

Answer:

<h2>E. normal roosters & hens and bald roosters & hens.</h2>

Explanation:

The sex chromosomes of the chickens are represented by ZZ for male chicken that is rooster and ZW for the female chicken that is hen.

In the given question, the genotype of the bald rooster is zz and the genotype of the normal hen is ZW.

So the F1 progeny are, Zz that is normal male and the zW that is bald female.

So F1 × F1

                        Zz × zW

Thus, F2 progeny are Zz ( normal rooster), zz ( bald rooster), ZW ( normal hen), zW ( bald hen).

             

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When a chemical reaction is moving at a slow rat of speed, what can be done to speed up the reaction
Mama L [17]

Answer:

To speed up the rate of reaction, you could increase the temperature or the concentration of the reactants.

Explanation:

Basically, the idea is to speed up the molecules' movement and to cause them to break apart or collide at greater frequency

7 0
4 years ago
If a meal supplies 110 g of carbohydrates, 25 g of protein, 20 g of fat, and the equivalent of 5 g of alcohol, what % of the kca
mars1129 [50]

Answer:

0.058 % kcalories comes from carbohydrate.

Explanation:

1 g of carbohydrtes gives 4 calories, 1 g of protein gives 4 kcalories, 1 gm of fat gives 9 calories and 1 g of alcohol gives 7 calories of energy.

Thus in a meal  that contains 110 g carbohydrates gives 110 x 4 = 440 calories,  25 g protein gives 25 x 4 = 100 calories, 20 g fat gives 20 x 9 = 180 calories and 5 g alcohol gives 5 x 7 =  35 calories.

Total calories in a meal  440+100+180+35 = 755.

Therefore % of carbogydrate will be 440x 100 divided by 755 = 58.27 %

In kcalories % would be 58.27/1000 = 0.5827 %  

5 0
3 years ago
In addition to transporting oxygen from the lungs to the tissues, hemoglobin is also involved in transporting carbon dioxide fro
neonofarm [45]

The correct option is (C) Carbon dioxide reacts with an amino group to stabilize the deoxyhemoglobin state.

In addition to transporting oxygen from the lungs to the tissues, hemoglobin is also involved in transporting carbon dioxide from the tissues to the lungs where, Carbon dioxide reacts with an amino group to stabilize the deoxyhemoglobin state.

<h3>How does hemoglobin contribute to the movement of carbon dioxide from the tissues to the lungs?</h3>
  • The transport of carbon dioxide in the blood is influenced by a number of factors. First, blood contains more carbon dioxide soluble molecules than oxygen. The plasma contains 5–7% of the total dissolved carbon dioxide.
  • Second, carbon dioxide can enter red blood cells and bind to hemoglobin or it can bind to plasma proteins. In this form, 10% of the carbon dioxide gets transported.
  • A substance known as carbaminohemoglobin is created when carbon dioxide binds to hemoglobin. Hemoglobin and carbon dioxide can bind to one other again.
  • As a result, when it gets to the lungs, the carbon dioxide can separate from the hemoglobin without restriction and leave the body.
  • Third, the bicarbonate buffer system is responsible for transporting 85% of the carbon dioxide molecules.

Learn more about the CO₂ transfer with the help of the given link:

brainly.com/question/9131881

#SPJ4

I understand that the question you are looking for is "In addition to transporting oxygen from the lungs to the tissues, hemoglobin is also involved in transporting carbon dioxide from the tissues to the lungs. How is this accomplished?

A. Carbon dioxide competes for the oxygen-binding site on the heme.

B. Carbon dioxide competes for the 2,3-BPG-binding site.

C. Carbon dioxide reacts with an amino group to stabilize the deoxyhemoglobin state.

D. Carbon dioxide binds to the carboxyl terminus of hemoglobin."

5 0
1 year ago
Recall that an ecosystem includes living things AND the non-living environment.
scoundrel [369]
Non-living parts?
A would be the answer then
sunlight certainly isn’t alive
8 0
3 years ago
The inhibition of mitosis causes cancer? True or false?
Dmitry [639]

Answer:

true

Explanation:

Mitosis is closely controlled by the genes inside every cell. Sometimes this control can go wrong. If that happens in just a single cell, it can replicate itself to make new cells that are also out of control. These are cancer cells.

3 0
3 years ago
Read 2 more answers
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