AP BIOLOGY

Detailed explanation-1: -Answer and Explanation: The genotype of the parent would be Ll. It is given that offspring with long hairs are more than the short hair.

Detailed explanation-2: -The allele for short hair (L) is dominant to the allele for long hair (1). A cross of heterozygous two short-haired dogs produces six short-haired and two long-haired offspring.

Detailed explanation-3: -In guinea pigs, short hair (H) is dominant to long hair (h), and the heterozygous condition when you cross a yellow coat (CY) and white coat (CW) gives you a cream coat. These two loci are located on different chromosomes. A heterozygous short-haired cream guinea pig is crossed with a long-haired white guinea pig.

Detailed explanation-4: -In cats, the allele for short hair (S) is dominant over the allele for long hair (or Angora) (s). A short-haired tomcat is mated with an Angora female. She bears seven kittens; four short-haired and three Angora.

Detailed explanation-5: -Short hair is dominant which means it can express in both heterozygous(Hh) and homozygous condition(HH). If all the progeny have short hair, then the parents should have been either: HH x HH OR HH x Hh OR HH x hh.