A nonreciprocal crossover causes which of the following products?
A)Deletion only
B)Duplication only
C)Nondisjunction
D)Deletion and duplication
E)Duplication and nondisjunction

Question

Quizplus · Accepted Answer

A nonreciprocal crossover involves unequal crossing over between homologous chromosome pairs. This can result in deletion of one region and duplication of another region, hence the products are deletion and duplication. Nondisjunction is the failure of homologous chromosomes to separate during meiosis, resulting in abnormal chromosome number in daughter cells. Therefore, options A, B, and C are incorrect. Option E is incorrect because it describes duplications and nondisjunction, neither of which would occur during a nonreciprocal crossover.

A Nonreciprocal Crossover Causes Which of the Following Products