The production of gametes requires that the DNA be replicated and the diploid number of chromosomes reduced to haploid; this process is called
A) meiosis.
B) mitosis.
C) recombination.
D) transcription.

Question

Quizplus · Accepted Answer

Meiosis is the process in which a diploid cell divides twice to produce four haploid cells, which are the gametes. During meiosis, the DNA is replicated, homologous chromosomes pair up, and then crossing over and recombination occur. Finally, two rounds of cell division occur, resulting in four haploid cells, each with a unique combination of genetic material.

B) Mitosis is the process by which a cell divides and produces two genetically identical daughter cells. It is the process by which somatic cells (body cells) reproduce, and does not involve the reduction in chromosome number that is necessary for gamete production.

C) Recombination is a process that occurs during meiosis, in which genetic information is exchanged between homologous chromosomes. This process results in genetic variation among the resulting gametes.

D) Transcription is the process by which genetic information in DNA is used to create a complementary RNA molecule. This process occurs in the nucleus of a eukaryotic cell and is necessary for the synthesis of proteins. It is not directly involved in the production of gametes.

The Production of Gametes Requires That the DNA Be Replicated