Genetics For Dummies by Tara Rodden Robinson

Author:Tara Rodden Robinson
Language: eng
Format: epub
Publisher: Wiley
Published: 2010-04-01T16:00:00+00:00

X-linked dominant traits

Like autosomal dominant disorders, X-linked dominant traits don’t skip generations. Every person who inherits the allele expresses the disorder. The family tree in Figure 12-5 shows many of the hallmarks of X-linked dominant disorders:

Affected mothers have both affected sons and daughters.

Both males and females are affected.

All daughters of affected fathers are affected.

The trait doesn’t skip generations.

Figure 12-5: A family tree showing inheritance of an X-linked dominant trait.

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