Which of the following is a characteristic seen in prophase I that does NOT occur in prophase II?
A)Chromosomes move to the middle of the cell.
B)Spindle formation occurs.
C)The number of chromosomes doubles.
D)Crossing over occurs.

Question

Quizplus · Accepted Answer

Crossing over occurs only in prophase I, when the homologous chromosomes pair up and exchange genetic information. It does not occur in prophase II, which follows meiosis I and involves the separation of sister chromatids. Choices A, B, and C are not characteristics unique to prophase I and also occur in prophase II.

Which of the Following Is a Characteristic Seen in Prophase