There are 2 alleles for hair color in guinea pigs. Curly hair (H) is dominant, and straight hair (h) is recess

Question

Im so confused on this one. Im stumped.. help please.

Answer 1

ok, the possible genotypes are HH (25%) Hh (50%) and hh (25%). The phenotypes are: curly-haired (75%) and straight-haired (25%). hope that helps!

Answer 2

What are you confused about?

The curly hair has a capital to show it is dominant over the straight hair.

This means is there is an allele present of each hair type the guinea pig will have curly hair. The only way it will have straight hair is if there are two alleles present for it.

Basically:

HH curly (25%). Hh curly (50%). hh straight(25%).

So the overall percentage of getting curly hair is 75%

Answer 3

What's your question?

Heterozygous or homozygous dominant means the guinea pig has curly hair. Homozygous recessive means the guinea pig has straight hair, since recessive alleles or genes only show when there are two of them and no dominant ones present.

Here's your known information:

Curly hair = HH and Hh

Straight hair = hh

Genotype =  Actual allele combination

Phenotype = Physical result from alleles

The probability of the guinea pig getting it really depends on its parents, and you should use a Punnett square to figure it out. However, using the usual both-parents-are-heterozygous thing, this would be the answer.

Genotypes:

HH = 25%

Hh = 50%

hh = 25%

Phenotypes:

Curly hair = 75%

Straight hair = 25%

Answer 4

It means if you have a Guinea pig whose parents have curly hair, it means they have HH or Hh, because the H is dominant, or curly hair is dominant. If you have a guinea pig with straight hair, it would have hh, because the h is recessive. Every time you have a dominant letter next to a recessive letter, the dominant letter wins. In order to get a trait from a recessive allele, you would need a pair of two recessive letters.