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.

2008年2月22日 · 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.

Germ cells are the only cells which are transmitted from one generation to the next, and can thus be considered immortal. Germ cells produce highly specialized cells called gametes, which have the unique capacity to convey all the information needed to build an entirely new organism.

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 …

2017年7月25日 · Somatic cells and germ cells are the two types of cells which collectively make up the body of multicellular organisms along with stem cells. Both somatic cells and germ cells are diploid in humans. Hence, two sets of homologous chromosomes are …

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?

2012年10月9日 · The germ line represents a continuous cellular link between generations and between species, but the germ cells themselves develop in a specialized, organism-specific context.

Germ Cells Definition, Embryonic to Gametes, Vs Somatic Cells Definition: What are Germ Cells? Essentially, germ cells are the embryonic precursors of egg and sperm cells (gametes) involved in sexual reproduction in animals.

2015年6月23日 · Recent studies have expanded our understanding of the factors and mechanisms that specify germ cell fate, including the partitioning of maternally supplied 'germ plasm', inheritance of...

1999年1月22日 · In this sense, germ cells are the stem cells of the species, since they give rise to organisms rather than organs. They are the means by which species form and change in evolution. In humans (as well as other animals), they are also the vehicles for inherited diseases.