Many insects do not see into the red color-range and as a result, many insect-pollinated flowers are colors other than red (e.g., purple and yellow). This flower coloration would be considered a(n)
a. natural selection.
b. evolution.
c. adaptation.
d. gene.
Answer: c. adaptation.
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You are a breeder of animals with an X-linked coat-color gene, one allele of which gives black fur and another of which gives white fur
If you cross a black-colored female with a white-colored male, what would their male and female offspring look like?
Suppose your mother has albinism, which is a recessive trait. Suppose also that your father has cystic fibrosis, which is also caused by a recessive trait. And, you learn that your father-in-law has albinism and cystic fibrosis. What are the odds that your first child will have both albinism and cystic fibrosis?
a. 1 in 2 b. 1 in 4 c. 1 in 8 d. 1 in 16
Lysogeny always requires integration of the viral genome into the host chromosome.
Answer the following statement true (T) or false (F)
Unsanitary and crowded conditions increase the incidence of all of the following diseases EXCEPT
A) plague. B) epidemic typhus. C) endemic murine typhus. D) Rocky Mountain spotted fever. E) relapsing fever.