Question

Biol 302 Problem Set 5 Fall 2023 19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences of crossing over in two cases: crossing over between C and D on chromatids 1 and 3, and crossing over between F and G on chromatids 2 and 4. Draw the chromatids at the end of prophase I, before anaphase I. Draw the 4 chromatids after meiosis II, as they would be when packaged into gametes. Indicate which gametes would give rise to viable or inviable zygotes. ABCDEFGHIJK ABCHGFEDIJK

          Biol 302 Problem Set 5
Fall 2023
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below.
Compare the consequences of crossing over in two cases:
crossing over between C and D on chromatids 1 and 3, and
crossing over between F and G on chromatids 2 and 4.
Draw the chromatids at the end of prophase I, before anaphase I. Draw the 4 chromatids after
meiosis II, as they would be when packaged into gametes. Indicate which gametes would give rise
to viable or inviable zygotes.
ABCDEFGHIJK
ABCHGFEDIJK

Biol 302 Problem Set 5
Fall 2023
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below.
Compare the consequences of crossing over in two cases:
crossing over between C and D on chromatids 1 and 3, and
crossing over between F and G on chromatids 2 and 4.
Draw the chromatids at the end of prophase I, before anaphase I. Draw the 4 chromatids after
meiosis II, as they would be when packaged into gametes. Indicate which gametes would give rise
to viable or inviable zygotes.
ABCDEFGHIJK
ABCHGFEDIJK

Added by Gregory C.

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