Homologous chromosomes undergo recombination during
a. prophase II.
b. metaphase I.
c. metaphase II.
d. both prophase I and II.
e. prophase I.
E
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What phrase best describes the field of epidemiology?
A. It is the study of factors that control the presence or absence of disease. B. It is the study of infectious disease. C. It is a direct and experimental science. D. It begins with laboratory studies on experimental animals. E. It is none of these.
The __________ biome is found in states such as Iowa, Minnesota, Nebraska, and other Midwestern
states, and is characterized by thick, rich soils, and a thick mat of sod. a. savannah b. tallgrass prairie c. taiga d. temperate deciduous forest e. chaparral
Oogenesis begins with which of these structures?
a. sperm b. secondary spermatocyte c. polar bodies d. spermatids e. primary oocyte
The largest molecule of the following is
A. glucose. B. a polysaccharide. C. a disaccharide. D. sucrose. E. a monosaccharide.