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Sex-Linked Traits—63R

Sex-Linked Traits—63R. Characteristics that are inherited from genes found on the sex chromosomes. Sex-Linked Traits. Females give X chromosome— Males give X or Y—determine sex of baby Sex Determination Females – XX Males – XY Almost all sex-linked traits are found on the X chromosome

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Sex-Linked Traits—63R

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  1. Sex-Linked Traits—63R Characteristics that are inherited from genes found on the sex chromosomes.

  2. Sex-Linked Traits • Females give X chromosome— Males give X or Y—determine sex of baby • Sex Determination • Females – XX • Males – XY • Almost all sex-linked traits are found on the X chromosome • Y chromosome contains very few genes and is mainly involved in sex determination

  3. X-linked recessive, carrier mother Unaffected father Carrier mother Unaffected Affected Carrier Unaffected son Unaffected daughter Affected son Carrier daughter Sex-Linked Traits • Most sex-linked traits found on the X chromosome • Y chromosome contains very few genes, mainly involved in sex determination • It is possible for a female to be a carrier of an X-linked trait, but not express it • Men will express all X-linked traits they inherit U.S. National Library of Medicine

  4. Various tests for color blindness. Example: Color Blindness

  5. ALD—Odone’s Mom- XAXa Dad- XAY Xa- ALD XA Xa XA Y

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