A particular breed of dog can have long hair or short hair. Whentrue-breeding long-haired animals were crossed to true-breedingshort-haired animals, the offspring all had long hair. The F2 generation showed a 3:1 ratio of long- to short-haired offspring. Asecond gene affects the texture of the hair. The two variants arewiry hair and straight hair. F1 offspring from a cross of these twovarieties all had wiry hair, and F2 offspring showed a 3:1 ratio ofwiry-haired to straight-haired puppies. Recently, a breeder of theshort- and wiry-haired dogs found a female puppy that was albino.Similarly, another breeder of the long- and straight-haired dogsfound a male puppy that was albino. Because the albino trait is always due to a recessive allele, the two breeders got together andmated the two dogs. Surprisingly, all of the puppies in the litterhad black hair. How can you explain this result?
A particular breed of dog can have long hair or short hair. When
true-breeding long-haired animals were crossed to true-breeding
short-haired animals, the offspring all had long hair. The F2 generation showed a 3:1 ratio of long- to short-haired offspring. A
second gene affects the texture of the hair. The two variants are
wiry hair and straight hair. F1 offspring from a cross of these two
varieties all had wiry hair, and F2 offspring showed a 3:1 ratio of
wiry-haired to straight-haired puppies. Recently, a breeder of the
short- and wiry-haired dogs found a female puppy that was albino.
Similarly, another breeder of the long- and straight-haired dogs
found a male puppy that was albino. Because the albino trait is always due to a recessive allele, the two breeders got together and
mated the two dogs. Surprisingly, all of the puppies in the litter
had black hair. How can you explain this result?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps