5: Sex Determination, Chromosomes and Linkage
- Page ID
- 42799
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- 5.2: Sex-Linkage- An Exception to Mendel’s First Law
- In the previous chapter we introduced sex chromosomes and autosomes. For loci on autosomes, the alleles follow the normal Mendelian pattern of inheritance. However, for loci on the sex chromosomes this is mostly not true, because most of the loci on the typical X-chromosome are absent from the Y-chromosome, even though they act as a homologous pair during meiosis. Instead, they will follow a sex-linked pattern of inheritance.