Search results
People also ask
What is a germ cell?
What is a germinal centre?
Where do germ cells come from?
What is a primordial germ cell?
How long does the germinal stage last?
What happens during the germinal stage of a zygote?
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.
Feb 22, 2008 · 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.
- Ryan M. Cinalli, Prashanth Rangan, Ruth Lehmann
- 2008
In biology and genetics, the germline is the population of a multicellular organism 's cells that develop into germ cells. In other words, they are the cells that form gametes (eggs and sperm), which can come together to form a zygote.
Germinal centres are the main source of memory B cells and plasma cells that produce high-affinity antibodies in the body. In this Review, Ulf Klein and Riccardo Dalla-Favera describe the ...
- Ulf Klein, Riccardo Dalla-Favera
- 2008
The germinal stage lasts a total of eight to nine days. It begins in a Fallopian tube when an ovum is fertilized by a sperm to form a zygote (day 0). The germinal stage continues as the zygote undergoes several initial cell divisions to form a solid ball of cells called a morula (days 3-4).
Germ cells are a special type of cells that play a central role in sexual reproduction in animals. They differentiate to produce male and female gametes and undergo meiosis to form a haploid set of chromosomes, which unite to create a new individual. AI generated definition based on: Brenner's Encyclopedia of Genetics (Second Edition), 2013.
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.
