Zero frequency is corresponds to recombination of perfect linkage and violates the law of independent assortment.
nicely matched A gene's recombination frequency is zero when it is perfectly connected to another gene. Recombination occurs with a frequency of 0.5 when genes are unlinked, meaning that half of the children are recombinants and the other half are parental types.
In genetics, recombination is the main process for introducing variation into populations. When maternal and paternal genes are reorganized to generate gametes during meiosis, recombination occurs (sex cells).
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