In fruit flies, natural selection tends to maintain both alleles of the foraging gene because:
a. gametes assort randomly
b. larvae of each foraging type are more likely to survive when their type is rare
c. larvae of each foraging type are more likely to survive when their type is common
d. rovers often find more food than sitters
e. sitters conserve more energy than rovers
b
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Biomass generation due to heterotrophic organisms is called ________ production
A) primary B) secondary C) auxotrophic D) regulatory
All of the following are part of the endomembrane system, except the
A) Golgi body. B) endosomes. C) lysosomes. D) peroxisomes. E) Neither C nor D are part of the endomembrane system.
An organism whose genetic makeup is 50% C-G bonds would have a(n) _________ melting temperature (Tm), compared with an organism with 20% C-G bonds
a. higher b. lower c. equal d. similar
Which of the following is true of the basement
membrane? a. It overlies the epithelium at its free surface. b. It is composed partially of epithelial cells and partially of connective tissue. c. It is mostly lipid and embedded celluloid fibers. d. It lies between the epithelium and connective tissue. e. It cements the layers of stratified epithelium together.