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Chapter 11: Q. 4 (page 294)
At which stage of meiosis is sister chromatids separated from each other?
a. prophase I
b. prophase II
c. anaphase I
d. anaphase II
the correct answer is option d
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Many farmers are worried about the decreasing genetic diversity of plants associated with generations of artificial selection and inbreeding. Why is limiting random sexual reproduction of food crops concerning?
a. Mutations during asexual reproduction decrease plant fitness.
b. Consumers do not trust identical-appearing produce.
c. Larger portions of the plant populations are susceptible to the same diseases.
d. Spores are not viable in an agricultural setting
Which of the following is not true in regard to crossover?
a. Spindle microtubules guide the transfer of DNA across the synaptonemal complex.
b. Nonsister chromatids exchange genetic material.
c. Chiasmata are formed.
d. Recombination nodules mark the crossover point.
What structure is most important in forming the tetrads?
a. centromere
b. synaptonemal complex
c. chiasma
d. kinetochore
Which type of life cycle has both a haploid and diploid multicellular stage?
a. asexual life cycles
b. most animal life cycles
c. most fungal life cycles
d. alternation of generations
Why would an individual with a mutation that prevented the formation of recombination nodules be considered less fit than other members of its species?
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