When a crossover occurs within the inversion loop of a pericentric inversion, each recombinant chromatid will have (Select all that apply.)
A) a dicentric bridge.
B) a duplication of some genes in the inverted region.
C) a deletion of some genes in the inverted region.
D) one copy of each gene, with some genes in a different order than normal.
E) one copy of each gene in the normal order.
B) a duplication of some genes in the inverted region.
C) a deletion of some genes in the inverted region.
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The eradication of malaria in Europe resulted from a specific breakthrough in the science of
a. systematics. b. ecology. c. evolutionary studies. d. pest control. e. sanitation.
Which of the following is true of prokaryotes?
A. Prokaryotes have a nucleus. B. Prokaryotes are single-celled. C. Prokaryotes do not have a chromosome. D. Prokaryotes have membrane-bounded organelles. E. Prokaryotes do not have ribosomes.
Which of the following evidence obtained from fossil studies is generally accepted as marking the beginning of the hominids?
A. large brain development B. walking upright C. bipedalism D. development of lower limbs longer than forelimbs E. manufacture and use of tools
A gene may consist of thousands of nucleotides.
a. true b. false