Holandric genes: Always having only one allel, never both. Holandric chromosome: Y — chromosome. The defferential region of Y- chromosome carries only Y-linked or holandaric genes,e.g., testis determing factor(TDF). read more
Holandric genes: Always having only one allel, never both. Holandric chromosome: Y — chromosome. The defferential region of Y- chromosome carries only Y-linked or holandaric genes,e.g., testis determing factor(TDF). It is perhaps the smallest gene occupying only 14 pairs. read more
For details, see human Y-chromosome DNA haplogroup. Genes Number of genes. The following are some of the gene count estimates of human Y chromosome. Because researchers use different approaches to genome annotation their predictions of the number of genes on each chromosome varies (for technical details, see gene prediction). read more