A) sperm are to pollen.
B) sperm are to anthers.
C) pollen is to carpels.
D) pollen is to sepals.
B) sperm are to anthers.
C) pollen is to carpels.
D) pollen is to sepals.
Hemophilia is a sex-linked recessive condition that results in deficient blood clotting. The disease causes excessive bleeding which occurs spontaneously or upon slight injury. In dogs (as in humans) hemophilia is caused by a defect in a gene on the X chromosome. What will be the results of mating between a normal, non-carrier female dog and a male dog with hemophilia?
A. All female offspring will be normal and half the male offspring will have hemophilia.
B. Half the male offspring will be normal and half will have hemophilia; all females will be carriers.
C. All the female offspring will be normal and all male offspring will be carriers.
D. Half the female offspring will have hemophilia and half will be carriers, all male offspring will be normal.
E. All of the offspring will be normal, but all females will be carriers.
E. All of the offspring will be normal, but all females will be carriers.
Biology & Microbiology
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People who have phenylketonuria, a genetic disorder, are unable to break down the amino acid phenylalanine so that it can be used in cellular respiration. Yet they need phenylalanine in their diet. Why do they need to eat some foods with phenylalanine?
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