RQ 4 – Flashcards
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If "dependent assortment" occurs, how do alleles of different genes behave?
answer
They "stick together" (they are transmitted together--as if they were a single gene).
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What does a ratio report?
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A frequency or proportion of occurrence, often expressed as a percent. (Note that the frequencies have to sum to 1.)
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If a parent's genotype is PpTtLl, what are the gamete genotypes it produces under the hypothesis of independent assortment?
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PTL, PTl, pTL, pTl, ptL, ptl, PtL, Ptl
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What's the difference between a chromosome and a chromatid?
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After replication, a chromosome consists of two chromatids.
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When you look at a drawing or photograph of chromosomes, how can you tell if they are replicated or unreplicated?
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Unreplicated chromosomes consist of a single "thread"; replicated chromosomes have two "threads."
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What's the difference between a haploid cell and a diploid cell?
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Haploids have one of each type of chromosome; diploids have two of each type.
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Which of the following is the correct definition of haploid number?
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The number of different types of chromosomes present.
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Which of the following is the correct definition of ploidy?
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The number of each type of chromosome present.
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What does it mean to say that "homologs synapse?"
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Pairs of homologous chromosomes physically come together.
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What is cytokinesis?
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Cell division (usually follows mitosis and meiosis)
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How many chromosomes are in this cell? Are they replicated or unreplicated?
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8 replicated
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What is the haploid number of this cell? Is it haploid or diploid?
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4 diploid
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Which pairs of chromosomes in this cell are homologous?
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a-f, b-h, c-e, d-g
