The influence of genetic drift on allele frequencies
increases as
a. gene flow increases.
b. population size decreases.
c. mutation rate decreases.
d. the number of heterozygous loci increases.
e. random mating increases.
Answer: b
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The marine macrophyte group with the highest number of species is:
a. seagrasses. b. red algae. c. green algae. d. brown algae. e. blue-green algae.
Which of the following statements is false?
a. Many fossils have not been discovered, whereas others may have been destroyed. b. Some types of organisms are more likely to be preserved than others. c. Pressure and mineralization lead to fossil formation. d. Aerobic environments favor fossilization. e. Most fossils form in sedimentary rock.
The presence of which hormone in a female’s urine
indicates that she is pregnant? a. luteinizing hormone b. follicle-stimulating hormone c. chorionic gonadotropin d. progesterone e. estrogen
What characteristics of stratified epithelium make it suitable as an external covering?
What will be an ideal response?