Unit 5 - Sexual and Asexual Reproduction

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8 Terms

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Chromatid

One of the two identical halves of a chromosome that has been replicated in preparation for cell division.

<p>One of the two identical halves of a chromosome that has been replicated in preparation for cell division.</p>
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Sister Chromatid

Identical copies of a chromosome

<p>Identical copies of a chromosome</p>
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Homologous Chromosomes

Pairs of chromosomes (with same genes)

<p>Pairs of chromosomes (with same genes)</p>
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Centromere

Structure that connects sister chromatids in a “x-shape”

<p>Structure that connects sister chromatids in a “x-shape”</p>
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Spindle Fibers

Protein structures that form during cell division and are responsible for separating and moving chromosomes to opposite poles.

<p>Protein structures that form during cell division and are responsible for separating and moving chromosomes to opposite poles. </p>
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Crossing over

Matching chromosome pairs (one from each parent) come close to each other and may twist together, exchanging genes.

<p>Matching chromosome pairs (one from each parent) come close to each other and may twist together, exchanging genes. </p>
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Linked traits

Characteristics that are determined by genes on the same chromosome.

<p>Characteristics that are determined by genes on the same chromosome.</p>
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Tetrads

4 chromatids

<p>4 chromatids</p>