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Ksivusya [100]
3 years ago
12

What does the pulmonary vein do?

Biology
1 answer:
marin [14]3 years ago
5 0

Answer:

it would be

Explanation:

C.

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Una mujer lleva en uno de sus cromosomas X un gen letal recesivo (l), y en el otro alelo dominante normal (L). ¿Cuál es la propo
nlexa [21]

Question in English:

A female carries a recessive lethal gene (l) on one of her X chromosomes, and a normal dominant allele (L) on the other. What is the sex ratio to be expected in this woman's dependency if she marries a normal man?

Answer:

2/3 females

1/3 males

Explanation:

Females have two X chromosomes (XX) and males have an X and a Y chromosome (XY).

The genotype of the female is XLXl. The genotype of the male is XLY, since he is normal.

The possible genotypes are:

<u>                            XL                  Xl</u>

<u>XL</u>                     <em>XLXL             XLXl</em>

<u>Y</u>                       <em>XLY               </em><em>XlY</em>

<em />

All female offspring will be normal as they will always have one normal copy of the X chromosome from their father.

50% of the male offspring will be normal, but 50% will inherit the lethal gene from their mother.

Because the allele is lethal, that means XlY males will not be born.

That means 2/3 of the children will be females, and 1/3 will be males.

8 0
3 years ago
A child has type O blood. Which of the following couples could be the child's parents?
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Answer:D Is the correct answer.

Explanation: All of the options could be the parents of the child with type O blood, because every type of blood has an O type in it.

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_____ is a process that helps fuel your metabolism.
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Answer:

hydro

Explanation:

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