Which of the following is the fourth basic step to genetically modify a cell?
A) transformation
B) ligation
C) plasmid cleavage
D) isolation of gene
E) restriction-enzyme digestion of gene
Answer: B) ligation
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Female cardinals select male mates in part based on their bright red color. What effect would this have on a cardinal population that was in Hardy-Weinberg equilibrium?
A. The red allele frequencies would decrease because of equilibrium. B. The frequency of red alleles would be less than those predicted by Hardy-Weinberg equilibrium. C. The frequency of red alleles would be greater than those predicted by Hardy-Weinberg equilibrium. D. The frequency of red alleles would be equal to those predicted by Hardy-Weinberg equilibrium. E. The red allele frequencies would remain unchanged because of equilibrium. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about the Hardy-Weinberg principle? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Vinblastine, a chemotherapeutic drug used to treat breast and testicular cancers, interferes with the
assembly of microtubules. Speculate how this drug works to inhibit cancer cell growth.
a. Vinblastine inhibits transition from G1 to S. b. Vinblastine inhibits transition from S to mitosis. c. Vinblastine inhibits cytokinesis. d. Vinblastine disrupts mitotic spindle formation and consequently mitosis. e. Vinblastine inhibits cyclin production.
The area inhabited by all individuals of a particular species is known as the population's
A) geographic range. B) density. C) ecosystem. D) habitat.
In an island population, the frequencies of the three MN blood types are given here:
M: 550 MN: 725 N: 225 a. Calculate the allele frequency of M and N. b. Assuming random mating, what are the expected frequencies for each blood type? c. Use chi-square analysis to test your hypothesis that mating is random for this population.