IDNLearn.com provides a comprehensive platform for finding accurate answers. Ask your questions and receive reliable and comprehensive answers from our dedicated community of professionals.

Crossing-over occurs
a. during prophase 2.
c. during prophase I.
b. during fertilization.
d. at the centromere


Sagot :

C. Prophase 1 crossing over occurs during prophase 1 of meiosis.
Answer : prophase I

Internets prove: Crossing over occurs only during prophase I.
The complex that temporarily forms between homologous chromosomes is only present in prophase I, making this the only opportunity the cell has to move DNA segments between the homologous pair.