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- ... variants in genes on the X chromosome . In males (who have only one X chromosome), a variant ... experience less severe symptoms of the disorder than males. A characteristic of X-linked inheritance is that ...
- ... pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the ...
- ... an affected son. Y-linked inheritance: Because only males have a Y chromosome, only males can be affected by and pass on Y- ... mitochondrial DNA . Although these disorders can affect both males and females, only females can pass variants in ...
- ... be used to explore ancestry in the direct male line. Only individuals with a Y chromosome (typically males) can have this type of testing done. However, ...
