Passage II

Each dog in a particular population has a black brown, or yellow coat. In this population, coat color is determined by 2 unlinked genes: Gene B and Gene E. Gene B has 2 alleles: B and b. Gene E also has 2 alleles: E and e. Table 1 shows the possible genotypes for Gene B and Gene E and the resulting coat color phenotypes.

Two of the dogs with black coats were crossed 3 times (Crosses 1-3). The coat colors of the offspring produced in each cross are shown in Table 2.

8. After Cross 1 but before Cross 2, a student hypothesized that each of the parents in Cross 1 had the genotype BBEE. Was this hypothesis consistent with the results of Cross 1?

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

Look at table 2, from the results of cross 1, all offsprings are black coat, then the genotypes of both parents are BBEE, then the genotypes of the offspring are also BBEE, which conforms to black coat This feature, so choose yes