Question

Prophase of meiosis I has some important differences from prophase of mitosis. These differences include: ___________BLANK pair, and _________BLANK occurs.

Answer 1

Answer:

The correct answer would be - homologous chromosome, and crossing over.

Explanation:

The first stage of the mitosis is called prophase while in the meiosis the first stage is called prophase I. During prophase stage the nucleus is prepare to divide, that follows by the disappearing of the nuclear envelop and condensation of the chromosomes initiate.

In the both type of division meiosis and mitosis shows some differences that occurs in first stage such as meiosis have homologous chromosome pair in the nucleus. The other difference is crossing over takes place in meiosis.

Thus, the correct answer is - homologous chromosome, and crossing over.

The first stage is called prophase in mitosis and prophase I or prophase II in meiosis I and meiosis II. During prophase, the nucleus is getting ready to divide. This means the nuclear envelope has to disappear and the chromosomes start to condense

Answer 2

Complete question:

Prophase of meiosis I has some important differences from prophase of mitosis. These differences include: ___________BLANK pair, and _________BLANK occurs.

A: chromatids; condensation

B.,chromosomes; separation

C. homologous chromosomes; crossing over

D. homologous chromatids; separation

Answer:

C. homologous chromosomes; crossing over

Explanation:

Prophase I of meiosis and prophase of mitosis are quite distinct with respect to the events occurring in the cells. Prophase-I of meiosis is a relatively long stage. The Zygotene stage of prophase-I includes the pairing of homologous chromosomes. This pairing is mediated by synaptonemal complex and the process is called synapsis. The paired chromosomes undergo the process of crossing over during the pachytene stage of prophase-I. In crossing over, the non-sister chromatids of the bivalents exchange some genetic material between them. The events of synapsis and crossing over do not occur during prophase of mitosis.