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25 Cards in this Set
- Front
- Back
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All of the following are sources of genetic variety except:
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synapsis
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Which of these is not a unique feature of meiosis?
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Diploid daughter cells
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The arrangement of the chromosomes in metaphase I of meiosis is not important as long as homologues pair.
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A. TRUE
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The random orientation of different pairs of homologous chromosomes on the metaphase plate is responsible for __________.
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B. Independent assortment 100%
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The process of independent assortment refers to:
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B. the orientation of homologous chromosomes at metaphase I
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Which scientist is credited with proposing in 1887 that an egg and a sperm fuse to form a zygote?
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E. van Beneden 100%
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The alignment of homologous chromosomes with the exchange of genetic information between them is known as:
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C. crossing over 100%
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During which stage of meiosis does crossing over occur?
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A. Prophase I 100%
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Bacteria reproduce by meiosis.
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B. FALSE<br/><br/> 100%
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Independent assortment of homologous chromosomes occurs at:
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B. metaphase I 100%
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In plants like the fern, haploid cells produced by meiosis divide by _________, forming a multicellular haploid phase.
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C. mitosis 100%
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In animals, asexual reproduction can involve the budding off of cells which grow by mitosis into a new individual.
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A. TRUE 100%
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When does separation of homologous chromosomes occur?
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B. Anaphase I 100%
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Some organisms are able to reproduce both sexually and asexually.
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A. TRUE 100%
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In humans, how many different kinds of gametes can be produced due to independent assortment only?
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D. 223 100%
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Meiosis is also known as reduction division.
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A. TRUE 100%
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Reproduction by mitosis only is asexual.
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A. TRUE 100%
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After meiosis, the gamete joins with another gamete in all eukaryotic organisms
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B. FALSE<br/><br/> 100%
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In anaphase I, ________ separate and in anaphase II, ____________ separate.
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A. homologous chromosomes, chromatids 100%
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Why is crossing over not possible in meiosis II?
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A. Because homologous chromosomes are no longer in the same cell. 100%
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The main difference between prophase I and II is that in prophase I:
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A. synapsis and crossing over occurs
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In humans, _____________ divide by meiosis to produce eggs and sperm.
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D. germ-line cells
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Which is incorrect about meiosis?
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C. Sister chomatids separate in anaphase I. 100%
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Animals do which type of reproduction?
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C. Sexual and asexual 100%
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During which stage do chromosomes line up in single file on the equatorial plane?
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C. Metaphase II
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