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Non-Linked Genes and Offspring Distribution (Part II)
Non-linked genes are those genes that are found on different chromosomes. Such genes will not be affected by the process of crossing over and will obey the law of independent assortment. Suppose we have a heterozygous plant crossed with a homozygous recessive plant. The two traits of interest are the color trait (dominant green and recessive yellow) and the height trait (dominant tall and recessive short). How do we determine whether or not these two genes are linked? It turns out that if the offspring produced have a genotype distribution of 1:1:1:1, then the genes are non-linked.
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