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Linkage question?

  • Thread starter fightboy
  • Start date
  • #1
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Genes A/a and B/b are linked and known to be 20 map units apart. Individuals heterozygous for both of these genes (genotypes= AB/ab) were mated with each other. If there 2000 offspring from this cross, how many of the offspring would you expect to show Ab or aB phenotypes?
I know that the gametes for each individual separate into 40%AB, 40%ab, 10%Ab, and 10% aB, but i'm confused on how to find the number of offspring from these percentages. If someone could help it would be much appreciated!
 

Answers and Replies

  • #2
34,051
9,910
I moved the thread to the homework section.

Just multiply the fractions with 2000?
 

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