Which guinea pig parent(s) in Punnett Square B is homozygous? Which is heterozygous? Explain how you know.

1 answer:

5 0

You did not provide an image for me, but I can explain.

Homozygous, with the root homo, means same. Therefore, a guinea pig parent with homozygous traits would have the traits being the same - either both recessive or both dominant, ie TT, tt.

Heterozygous on the other hand means different, therefore the traits would be one dominant and one recessive - for example, Tt.

If for the punnet square it has different traits (Combo RB for red and black or combo RW red white for like fur color) than heterozygous would be any that isn’t like TT or tt or any other letters used.

Hope this helps!

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If Mendel had crossed a true breeding dominant plant with a true breeding recessive plant, in which of the three generations is

olchik [2.2K]

Answer:

If Mendel crossed a true breeding dominant plant with a true breeding recessive plant the recessive trait is visible in the F3 generation. 

Explanation:

In Mendel’s cross the selected parents are a tall pea plant and a short pea plant. Tall is the dominant trait and short is the recessive trait. Both the parents are homozygous.

Letter T represents tall and t represents short. Hence the phenotype TT is homozygous dominant and tt is homozygous recessive.

The genotype Tt represents tall since T is dominant over t. Mendel’s cross can be represented as 

 $Tall \times Short$ 