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Cards In This Set
| Front | Back |
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Which scientists is credited with proposing in 1887 that an egg and a sperm fuse to form a zygote?
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Van Beneden
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Why is crossing over not possible in meiosis II?
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Because homologous chromosomes are no longer in the same cell
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In anaphase I, _____ separate and in anaphase II, _____ separate.
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Homologous chromosomes, chromatids
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The pairing of homologous chromosomes:
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Is called synapsis
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How many possible orientations are there if a cell has four chromosome pairs?
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16
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An organism's diploid number is 64. Its haploid number would be:
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32
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Some organisms are able to reproduce both sexually and asexually
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True
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Genetic recombination is possible because of _____ during or after meiosis
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All of these are correct (independent assortment, crossing over, fertilization with a non related gamete.)
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Meiosis involves four nuclear division
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False
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The alignment of homologous chromosomes with the exchange of genetic information between them is known as:
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Crossing over
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Duplication of DNA occurs:
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During interphase
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Reproduction by mitosis only is asexual
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True
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The kinetochore holds the homologous chromosomes together
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False
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Bacteria reproduce by meiosis
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False
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During which stage of meiosis does crossing over occur?
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Prophase I
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