Sean has congenital generalized hypertrichosis, an X-linked dominant condition that produces dense hair on the face and upper body. He can pass this trait
A) definitely to a daughter and definitely not to a son.
B) definitely to a son and definitely not to a daughter.
C) with equal probability to a son or daughter.
D) with a probability of 1/2 to a son and 1/4 to a daughter.
A) definitely to a daughter and definitely not to a son.
You might also like to view...
The presence of altruistic behavior is most likely due to kin selection, a theory maintaining that _____
A) aggression between sexes promotes the survival of the fittest individuals B) genes enhance survival of copies of themselves by directing organisms to assist others who share those genes C) companionship is advantageous to animals because in the future they can help each other D) critical thinking abilities are normal traits for animals and they have arisen, like other traits, through natural selection E) natural selection has generally favored the evolution of exaggerated aggressive and submissive behaviors to resolve conflict without grave harm to participants
The chemical colchicine prevents the formation of microtubules. It is commonly used in certain experimental procedures to cause changes in cellular chromosomes. Which of the following changes is it likely to be used to create?
A) Induction of mutant polyploid individuals B) Induction of mutant aneuploid individuals C) Prevention of nondisjunction in cell cultures D) Induction of chromosomal deletions in experimental cell lines E) Induction of chromosomal duplications in experimental cell lines
How many turns of the Calvin cycle are needed to make one glucose molecule?
A. 2 B. 3 C. 5 D. 1 E. 6
There is a mutation in the operator of the trp operon in a cell such that the trp repressor is unable to bind to the operator. If tryptophan is added to the cell, what will happen?
A) Tryptophan will bind to the repressor, and trp enzymes will be produced. B) Tryptophan will bind to the repressor, and trp enzymes will not be produced. C) Tryptophan will not bind to the repressor, and trp enzymes will be produced. D) Tryptophan will bind to the operator, and trp enzymes will be produced.