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In a cell about to undergo meiosis there are two pairs of homologous chromosomes. Genes D and d occur on different members of one pair of chromosomes. On the other pair of homologous chromosomes, genes B and C are linked on one chromosome, and genes b and c are on the other. Of the following gametes, which would you expect to be produced in relatively low frequency? Highest frequency?
a) DBC
b) DbC
c) dbc
d) a & b are expected in low frequency
e) all these gametes will occur in equal frequency
I know Double Crossovers produce the lowest frequency and Parental types the highest frequency, but i can't figure out how the genes are organized and on what chromose lies what gene. An illustration or something showing where each gene would help greatly! thanks!
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