Primordial germ cells, the founder cells of the germ line, are set aside in the early animal embryo, and divide and differentiate to produce sperm and egg, the male and female gametes ...

(B) Hypothetical pedigree and molecular analysis showing germ-line mosaicism in tuberous sclerosis ... DNA analysis reveals that the father's germ cells, but not other tissues, harbour the ...

Two weeks after a human egg is fertilized, primordial germ cells (PGCs), which develop into sperm and eggs, are formed. In six to 10 weeks after fertilization, PGCs differentiate into pro ...

The nucleus of a germline stem cell undergoes two divisions, firstly separating homologous chromosomes and secondly separating chromatids. Haploid gametes contain 23 single chromosomes.