A color-blind man and a woman with normal vision
whose father was color blind have a son. Color
blindness, in this case, is caused by an X-linked
recessive gene. If only the male offspring are
considered, the probability that their son is color
blind is
a. 0.25 (or 25%).
b. 0.50 (or 50%).
c. 0.75 (or 75%).
d. 1.00 (or 100%).
e. none of these.
Answer: b
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Assuming no crossing over between the gene in question and the centromere, when do alleles segregate during meiosis?
What will be an ideal response?
Organisms that inhabit soil or water and breakdown and absorb the organic matter of dead organisms are called ________.
Fill in the blank(s) with the appropriate word(s).
On which continent are introduced mosquito species absent?
a. Asia b. North America c. South America d. Antarctica e. Australia
According to the doctrine of natural rights:
A) people behave in ways that allow them to obtain favorable outcomes. B) all persons are created equal and are entitled to the same opportunities and protections. C) inalienable rights are considered to be self-evident and universal. D) inalienable rights cannot be surrendered by citizens to the sovereign.