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Sex linkage

Description

A-Levels Biology 4 (Variation and Evolution) Mind Map on Sex linkage, created by harry_bygraves on 06/04/2013.
harry_bygraves
Mind Map by harry_bygraves, updated more than 1 year ago
harry_bygraves
Created by harry_bygraves about 9 years ago
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Resource summary

Sex linkage
  1. Human sex is determined by a pair of sex chromosomes called X and Y. Because these chromosomes do not look alike, they are sometimes referred to as heterzygous.
    1. X-linkage; sex linkage results in an inheritance pattern of different from that shown by genes carried on autosomes. In x-linkage, a recessive allele is expressed more often in males than in females because males carry only one allele for an X-linked gene, whereas females have two alleles for the gene
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