Recombination Frequency: probability of a cross-over between two genes on the same chromosome
: ranges from 0% to 50%
• 0% means the two genes are close together and are inherited together
• 50% means the two genes are far apart and will assort independently
If the frequency of recombinant progeny (the recombination frequency) from a cross between one individual heterozygous at two loci and a second individual homozygous recessive at both of those loci is less than 50%, the two genes in question are genetically linked. What can we conclude about the genetic and physical linkage of two genes when the recombination frequency between those two genes is equal to 50%?
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