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13 Sexual life cycles and Meisos
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A human cell containing 22 autosomes and a Y chromosome is
a sperm -
The two homologs of a pair move toward opposite poles of a dividing cell during
meiosis I -
If the DNA content of a diploid cell in the G1 phase of the cell cycle is x, then the DNA content of the same cell at metaphase of meiosis I would be
2x -
All possible products of meiosis in plant and animal life cycles:
Spores and gametes (sperms and eggs) -
This chromosome has two chromatids, joined at the centromere. What process led to the formation of the two chromatids?
The two chromatids were formed by duplication of a chromosome. -
Two sister chromatids are joined at the centromere prior to meiosis. Which statement is correct?
Barring mutation, the two sister chromatids must be identical. -
Sexual and asexual reproduction are alike in that __________.
they can both occur in multicellular organisms -
Which of the following is part of the life cycle called alternation of generations?
multicellular haploid stage (gametophyte),spores, multicellular diploid stage (sporophyte) and zygote -
In sexually reproducing species, the chromosome number remains stable over time because __________ and __________ always alternate.
meiosis ... fertilization -
The egg (ovum) of a rabbit contains 22 chromosomes. How many chromosomes are in the somatic (body) cells of a rabbit?
44
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