Question
Question: Does meiosis occur in germ cells?...
Does meiosis occur in germ cells?
Solution
Meiosis is a type of cell division that occurs in sexually reproducing organisms' germ cells and is used to produce gametes such as sperm and egg cells. It takes two rounds of division to produce four cells, each with only one copy of each chromosome (haploid).
Complete answer:
Meiosis starts with a diploid cell that has two copies of each chromosome, referred to as homologs. The cell first replicates its DNA, resulting in each homolog having two identical sister chromatids. The homologs then pair up and exchange genetic information via homologous recombination, which frequently results in physical connections (crossovers) between them.
DNA replication is followed by two rounds of cell division in meiosis, resulting in four daughter cells, each with half as many chromosomes as the parent cell. Meiosis I and meiosis II are the two meiotic divisions. During the S phase of the cell cycle, before meiosis, each chromosome's DNA is replicated so that it consists of two identical sister chromatids.
A germ cell is any biological cell that produces gametes in a sexually reproducing organism. Germ cells originate in the primitive streak of many animals and migrate to the developing gonads via the embryo's gut. They go through meiosis there, then cellular differentiation into mature gametes (eggs or sperm). Plants, unlike animals, lack germ cells.
Meiosis is a process that occurs in germ cells. Germ cells go through both mitosis and meiosis because they need to develop and grow the complicated organ structures of their parents, which necessitates cell division. As a result, mitosis and meiosis ensure that germ cells divide and organize. Meiosis I, on the other hand, is only seen in germ cells.
Thus, yes meiosis occurs in germ cells.
Note:
Mitosis, the type of cell division used by eukaryotes to divide one cell into two identical daughter cells, uses many of the same mechanisms as meiosis. Meiosis produces spores, which are haploid cells that can divide vegetatively without fertilization, in some plants, fungi, and protists. Some eukaryotes, such as bdelloid rotifers, cannot undergo meiosis.