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
Which statement explains why the recombination frequency between two genes is always less than 50%?
a) The genotype of the F1 gametes will always be 50% parental gametes and 50% recombinant gametes.
b) Genes with a recombination frequency near 50% are unlinked and have an equal likelihood of being inherited together or separately.
c) F1 gametes always have 50% of their alleles from each parental gamete.
d) Recombination cannot be more than 50% because chromosomes are only 50% map units in length.
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