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A germ cell is any cell that gives rise to the gametes of an organism that reproduces sexually. In many animals, the germ cells originate in the primitive streak and migrate via the gut of an embryo to the developing gonads. There, they undergo meiosis, followed by cellular differentiation into mature gametes, either eggs or sperm.
Somatic cells and germ cells are two types of cells found in the body of multicellular organisms. Both somatic cells and germ cells are diploid in humans. Diploid germ cells give rise to haploid gametes by meiotic cell divisions.
Germ cells are a source of totipotency and an enduring link between generations, ensuring the transmission of genetic as well as epigenetic information to successive generations. This contrasts with somatic cells, which die away after differentiation and contribution to organismal physiology.
How do germ cells become epigenetically different from somatic cells, and how do germ cells navigate the process of erasing and then resetting their imprinted marks?
germ cell. biology. Also known as: gametocyte. Learn about this topic in these articles: comparison with soma. In soma.
Germ cells are specialized cells that are responsible for transmitting the genome of an individual organism to its offspring. The defining characteristic of the germ cells is their ability to...
Let's see how the DNA number is maintained in sexual reproduction.
Germ cells are specialized in transmitting genetic information across generations. They are responsible for producing gametes, that is, oocytes and spermatozoa, through meiosis, resulting in haploid gametes with unique genetic information.
Germ cells are responsible for the production of sex cells or gametes (in humans, ovum and spermatozoa). Germ cells also constitute a cell line through which genes are passed from generation to generation. The vast majority of cells in the body are somatic cells.
Germ cells are often described as the ultimate totipotent stem cell. However, germ cells give rise to only sperm or eggs, and it is not until the fertilization of the egg or parthenogenesis that an entirely new organism arises.