50% of the male sex chromosomes
a. are Y.
b. are X.
c. are XY.
d. are either X or Y.
e. are none of these.
Answer: d
You might also like to view...
Which is an example of an organ that is nervous in origin, structure, and function but secretes
substances into the bloodstream? a. anterior pituitary b. posterior pituitary c. pancreas d. adrenal cortex e. testis
Which of the following terms refers to the genetic makeup of an organism?
A) primosome B) phenotype C) genotype D) heritable E) purine
The function of the parathyroid glands is to produce parathyroid hormone, which acts to control
a. phosphorus levels. b. red blood cell formation. c. white blood cell formation. d. production of thyroid hormone. e. calcium levels.
All EXCEPT which of the following are
disadvantages to sociality? a. predator avoidance b. cannibalism c. competition for food d. contagious diseases e. parasite infestation