haploid number
haploid number The number of chromosomes in a gamete, designated n. It is in contrast with the number of chromosomes in somatic cells, which is usually some multiple of this number, commonly 2n (diploid), but sometimes 3n (triploid), 4n (tetraploid), or many-n (polyploid). A haploid cell thus has only one chromosome set, and a haploid organism contains only haploid cells.
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Haploid , hap·loid / ˈhapˌloid/ Genetics • adj. (of a cell or nucleus) having a single set of unpaired chromosomes. Compare with diploid. ∎ (of an organism or… tetraploid , tet·ra·ploid / ˈtetrəˌploid/ Biol. • adj. (of a cell or nucleus) containing four homologous sets of chromosomes. ∎ (of an organism or species) compos… Aneuploid , aneuploid A cell or organism whose nuclei possess a chromosome number that is greater by a small number than the normal chromosome number for that sp… Schwann Cell , Schwann cell (neurilemma cell) A cell that forms the myelin sheath of a nerve fibre. Each cell is responsible for a single length of the fibre (calle… killer cell , killer cell Either of two types of lymphocyte that destroy infected or cancerous host cells. Natural killer cells are distinct from both T cells and… Adherens Junction , adherens junction A cell junction that is commonly observed in epithelial (see EPITHELIUM) cells (e.g. those lining the intestine and those in cardia…
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haploid number