Potential for Sex Differences That Are Intrinsic
To Differences in Sex Chromosome Constitution
- Genes only on Y (affects only males)
- Genes that are on both X and Y, but the X and Y copies have diverged (females and males differ)
- Genes on X that are not on Y, expressed from both X chromosomes (females could express twice as much product)
- Genes involved in the process of X inactivation (affects only females)
- Genes expressed only from the paternal X chromosome (affects only females)
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