In an inversion, a segment of a chromosome is turned 180 degrees. Inversions cause breaks in some genes and may move others to new locations. In individuals heterozygous for a chromosome inversion, the homologous chromosomes form a loop in prophase I of meiosis. When crossing over takes place within the inverted region, nonviable gametes are usually produced, resulting in a depression in observed recombination frequencies.
-A dicentric chromosome is produced when crossing over takes place in an individual heterozygous for which type of chromosome rearrangement?
A) Duplication
B) Deletion
C) Paracentric inversion
D) Pericentric inversion
Correct Answer:
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