Sex chromosomes {Y-chromosome}| can have 80 genes. Some genes are only on Y. SRY is for making testes and derived from SOX3 of X-chromosome. TTY2, CDY, PRY, DAZ, and BPY2 are for making sperm. Other genes are TTY1, TSPY, and XKRY.
Some genes are on X and Y. DBY, EIF1AY, RPS4Y, SMCY, TB4Y, USP9Y, UTY, and ZFY are for housekeeping. RBMY and VCY work only in testes. Others are PCDHY and AMELY.
One Y-chromosome end is 95% of Y-chromosome and has no functioning genes. Y-chromosome has palindrome structure.
Biological Sciences>Genetics>Chromosome>Kinds>Sex
4-Genetics-Chromosome-Kinds-Sex
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Date Modified: 2022.0224