Which of the following types of protein would be most easily removed from a membrane by changing pH or ionic strength?
A) GPI-anchored protein
B) fatty acid-anchored protein
C) integral protein
D) peripheral protein
E) glycosylated integral protein
Answer: D
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In a population that is in Hardy-Weinberg
equilibrium, the frequency of the recessive homozygous genotype is 0.49. The percentage of the population that is heterozygous is a. 51. b. 49. c. 42. d. 7. e. 3.
Crossing-over is
A) the place on a homologous pair of chromosomes at which a physical exchange occurs. B) an extremely rare event. C) an event that only takes place during meiosis. D) the reciprocal exchange of homologous regions of chromatids. E) not useful in mapping genes.
A phylogenetic tree:
a. is a hypothesis about evolutionary relationships. b. can illustrate selection pressures that have acted on taxa. c. shows the similarities between different taxa. d. must be rooted to properly convey evolutionary relationships. e. shows the number of character changes that have occurred between taxa.
Which of the following statements describes events during oogenesis?
A. The primary spermatocyte divides producing two spermatids. B. The primary oocyte divides producing four diploid cells. C. The primary oocyte divides producing two haploid cells. D. The primary oocyte divides producing four haploid cells. E. None of these events occur during oogenesis.