Part complete Identify the phase of mitosis, which ends when daughter chromosomes move to the centrioles at opposite poles of the cell.
a. metaphase
b. prophase
c. telophase
d. interphase
e. anaphase
Answer: e. anaphase
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In Huntington disease, a child will typically develop the disease if one parent also has it. It is as common in boys as in girls. This disease is
A. X-linked recessive. B. autosomal dominant. C. autosomal recessive. D. X-linked dominant. E. pleiotropic.
Which cells secrete surfactant?
A) alveolar macrophages B) goblet cells C) type II alveolar cells D) ciliated cells E) type I alveolar cells
Assortative and disassortative mating are similar in that both ________
A. change only the expected Hardy-Weinberg allele frequencies in a population. B. increase the proportion of homozygous individuals in a population. C. change only the expected Hardy-Weinberg genotype frequencies in a population. D. are examples of random mating. E. change both the expected Hardy-Weinberg allele and genotype frequencies in a population.
You are asked to give a classroom demonstration of DNA supercoiling. To do so, you take two different colored pieces of rubber tubing, twist them very tightly and excessively around each other and join the ends of the tubing appropriately. Next, you relieve the supercoiling by breaking one strand and unwinding it. In this demonstration, the breaking and unwinding to relieve the supercoiling simulates the action of
A. polymerases. B. exonucleases. C. primases. D. topoisomerases. E. ligases.