5.4 Variability & Genetics- Sex-Linked Inheritance

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  • Created by: Rebecca
  • Created on: 19-06-11 17:12

Sex-Linked Inheritance:

  • Alleles that are carried on the X chromosome are described at sex-linked.
  • Any recessive genes that are carried on a male's X chromosome will not have a normal X chromosome to prevent them from being effective, as they instead have a Y chromosome that contains few genes.
  • Therefore the recessive gene is unpaired and there is no dominant gene present.
  • This is known as sex-linkage.
  • The gene cannot be passed from a male to his sons.

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