round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square…

round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy × rryy?

round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy × rryy?

Answer

Explanation:

Step1: Determine gametes for RRYy

The genotype RRYy can produce two types of gametes: RY and Ry. This is because the R - gene is homozygous (RR) and will always contribute an R, and the Y - gene is heterozygous (Yy) and can contribute either Y or y.

Step2: Determine gametes for RrYY

The genotype RrYY can produce two types of gametes: RY and rY. Since the Y - gene is homozygous (YY) it will always contribute a Y, and the R - gene is heterozygous (Rr) and can contribute either R or r.

Step3: Set up Punnett - square

The rows of the Punnett - square should represent the gametes of one parent (e.g., RRYy) and the columns should represent the gametes of the other parent (e.g., RrYY). The correct Punnett - square will have 2 rows (for the 2 gametes of RRYy) and 2 columns (for the 2 gametes of RrYY). The gametes for RRYy (RY, Ry) should be placed along one side (either rows or columns), and the gametes for RrYY (RY, rY) should be placed along the other side.

The Punnett - square should look like this:

RY rY
RY RRYY RrYY
Ry RRYy RrYy

However, since the options are not fully shown in the question, we can say that the correct Punnett - square will have rows labeled with RY and Ry and columns labeled with RY and rY.

Answer:

The Punnett - square with rows labeled RY, Ry and columns labeled RY, rY (not shown completely in the given options but described above) is the correct one for the cross RRYy × RrYY.