Assume that the a and b loci are linked and separated by a distance of 20 map units on a chromosome (i. e., 20% recombination occurs between the two loci). a p0 cross is aabb x aabb. the f1 resulting from this cross is aabb. if you cross this f1 "dihybrid" to an individual with genotype aabb, what frequencies of genotypes do you expect in the following generation? (hint: the p0 generation tells you how the alleles are linked.)

The frequencies would be - AaBb= 2/4= 1/2 Therefore AaBb= 50%

                                              - aabb=  2/4= 1/2 Therefore aabb= 50%

Explanation:

The resulting F1 cross, AaBb, indicated that A is dominant over a, and B is dominant over b. Therefore a cross between AaBb and aabb would result to---

                                 AaBb                x               aabb

                     =       AaBb         AaBb       aabb        aabb

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: