In a polygynous mating system, you would expect to see:
A. One or a few males monopolizing multiple females
B. A high degree of sexual dimorphism
C. A high degree of sperm competition
D. A and B
E. All of the above
Answer: D. A and B
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Macromolecules that are used by most organisms to store hereditary information are called:
A. proteins. B. transfer RNA molecules. C. ribosomal RNA molecules. D. DNA molecules. E. messenger RNA molecules.
Mutagens increase the amount of damage to DNA
A. true B. false
What are attributes of oral contraceptives? (Check all that apply.)A) They contain a progesterone and sometimes an estrogen analogue.B) The progesterone is in the 21-day pills, and the estrogen is in the 7-day pills.C) They help protect against ovarian and endometrial cancer.D) They are appropriate for use by smokers over age 35.E) They have a low failure rate of only 1% to 5% a year.F) They act by inhibiting LH and FSH secretion, inhibiting ovulation.
What will be an ideal response?
The most precise prenatal diagnosis for detecting chromosomal abnormalities is __________. Fill in the blank(s) with the appropriate word(s)