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Mechanisms of sex linkageContributors 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. Normally flies have red eyes but flies with a mutant allele of this gene called white- w- have white eyes because the red pigments are absent.Punnett Squares for sex-linked traits work like normal, except that you use the Mammals use the Y-chromosome mechanism of sex-determination, in which the . Whatever the sex choice mechanism, however, there are two different means by which the cells of. Citation: Hake, L. & O'Connor, C. () Genetic mechanisms of sex determination. .. Nature Genetics 21, – () doi/ (link to article)...the end of the story look at the video above ↑ ↑ ↑

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