Question

In cattle, the allele for short horns (S) is dominant over the allele for long horns (s). Two short-horn cows are bred and produce four offspring. Three have short horns and one has long horns. Which of the following is the most likely combination of genotypes in these offspring?

A. 3 SS and 1 ss
B. 1 SS, 2 Ss, and 1 ss
C. 1 SS, 2 ss, and 1 Ss
D. 2 SS and 2 ss

Answer 1

The most likely combination of genotypes in the offspring is 3 SS and 1 ss.

Step-by-step explanation:

In this case, the parents are both short-horn cows, which means they both have the genotype SS. When two individuals with the genotype SS are bred, all of their offspring will also have the genotype SS. Therefore, the most likely combination of genotypes in these offspring is 3 SS and 1 ss. This is option A.