A wild-type chromosome has the following segments. where * represents the centro

Question

A wild-type chromosome has the following segments. where * represents the centromere: ABCDE*FGHU A chromosomal rearrangement results in the formation of a chromosome with the following segments: ABCDGF*EHIJ In an individual who is heterozygous for this rearranged chromosome, which of the following would NOT be produced during meiosis. if there is a cross-over between segments F and G? Which of the following would be expected to have reduced gamete viability caused by crossing-over in prophase I of meiosis? Which of the following might be expected to show position effects? If a cross-over occurs outside the inversion loop of an individual who is heterozygous for a paracentric inveresion. 50% of the gametes are expected to be inviable. In an individual who is heterozygous for a large deletion, the normal chromosome will form a loop, when the two homologs pair at prophase I of meiosis.

Explanation / Answer

1. e. ABCDGF*EHIJ

2. An individual who is heterozygous for a pericentric inversion.

3. All of the above

4. True

5. True

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