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Chapter 11: Q. 5 (page 294)
At metaphase I, homologous chromosomes are connected only at what structures?
a. chiasmata
b. recombination nodules
c. microtubules
d. kinetochores
The correct answer is option a
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Meiosis usually produces ________ daughter cells.
a. two haploid
b. two diploid
c. four haploid
d. four diploid
The pea plants used in Mendel鈥檚 genetic inheritance studies were diploid, with 14 chromosomes in somatic cells. Assuming no crossing-over events occur, how many unique gametes could one pea plant produce?
a. 28
b. 128
c. 196
d. 16,384
How does the role of meiosis in gamete production differ between organisms with a diploid-dominant life cycle and organisms with an alternation of generations life cycle?
A diploid, multicellular life-cycle stage that gives rise to haploid cells by meiosis is called a ________.
a. sporophyte
b. gametophyte
c. spore
d. gamete
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.
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