and he denoted these categories Type A and Type B (Table 1). Table 1: Chromosome Counts in the Somatic Cells of Several Type A and Type B Species As illustrated in Table 1, the somatic cells from ...

If the cells didn't have half, a fertilized egg would contain 92 chromosomes and be untenable. Meiosis, a type of cell division specific to reproduction, avoids this by halving the number of ...

Female mammals typically carry two X chromosomes — one from each parent — and a new study suggests that the maternal X is linked to faster brain aging.

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

Each replicated chromosome is made up of two identical strands called chromatids that are joined together. Each chromatid is a full length DNA molecule. The stages outlined in the following ...