Refer to lab 4.04, part 3. a man who is color-blind marries a woman who is not color-blind and is not a carrier of the allele for color blindness. after creating a punnett square, which of the following is true?

a) all of the females will be color blind.
b)all of the females will be carriers.
c) all of the males will be color blind.
d) all of the males will be carriers.

"All of the males will be carriers" is True

Explanation:

In  X chromosome the most common type of color blindness are generally found, that can be a recessive trait. As we know that the females are heterozygous for this trait, and they can have normal vision.  

Since the males inherit the trait from their mothers and becomes color blindness.  And the color blindness defect is found in the X chromosome. This defect can be seen in the females if both the parents have color blindness problem.  

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

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