Question

Pachytene occurs during:
A. Meiosis
B. Mitosis
C. Growth of a cell
D. Formation of endosperm

Answer 1

Hint:
Pachytene's process includes the product in which the separation of the two chromatids of each paired chromosome takes place. Besides, the exchange of sections between chromatids may take place. The homologous chromosomes in the Pachytene process become thicken.

Complete answer:
We know that the long and complicated process of Meiosis Prophase I. And it is because between homologous chromosomes, crossing over occurs. The components of leptotene, zygotene, Pachytene, diplotene, and diakinesis are included in Prophase I of Meiosis.
As we know, the third stage of prophase 1 of Meiosis Pachytene. Sister chromatids are formed by each chromosome pair, and Crossing over genes occurs during this stage.
The sort of cell division, which results in four daughter cells, each with half the sum of chromosomes contained by the parent cell, is called Meiosis. It doesn't include the process of Pachytene in it.
The process in which the cell accumulates a fixed amount of mass and increase in carnal size is called Cell growth.
The process in which the two sperm nuclei present inside a pollen grain influence the internal of a female gametophyte is known as the process of Formation of the endosperm. The endosperm is the name given to the developed form of the cell created in double fertilization.

Hence, Option (A) is the correct answer.

Note: Synapsis is the other name of Crossing over. It is one of the concluding phases of the recombination of genes. We can say that it is a process of exchange of genetic materials or segments. In general, this procedure is processed between non-sister chromatids of homologous chromosomes.