What would happen if sister chromatids did not break apart during anaphase of mitosis? What will be an ideal response?
ANSWER: Each duplicated chromosome would be pulled to one or the other spindle pole—which is
exactly what happens during anaphase I of meiosis.
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From an evolutionary perspective, germ-line mutations are more significant than somatic mutations. This is because:
A. somatic mutations affect only one or a few cells. B. somatic mutations are generally harmful. C. only germ-line mutations will appear in an individual's descendants. D. only germ-line mutations are potentially beneficial. E. somatic mutations affect only one or a few cells and only germ-line mutations will appear in an individual's descendants. Answer Point Value: 1.0 points Answer Key: C 5 Remember that, in Mendel's garden peas, the yellow gene determines flower color, with the A (yellow) allele dominant to the a (green) allele. In a population of 200 plants, the genotype frequencies are 50% AA, 25% Aa, and 25% aa. What are the allele frequencies? A. 50% A, 50% a B. 50% A, 25% a C. 87.5% A, 12.5% a D. 62.5% A, 37.5% a E. 75% A, 25% a
The critical tissue for producing a vasodilatory effect of acetylcholine in Robert Furchgott's experiments with rabbit aortas was the
A. endothelium. B. smooth muscle layer. C. elastic outer layer. D. pericardium. E. one-way valves.
If a sperm cell combines with an egg cell, then the result is a
A. gamete. B. diploid cell. C. duplicated chromosome. D. gametophyte. E. haploid cell.
In a population of 10,000 individuals, in which 3600 are MM, 1600 are NN, and 4800 are MN, what are the frequencies of the M alleles and the N alleles?
What will be an ideal response?