Question

in a flower, the allele for red color is dominant (r) over the allele for white color (r). a cross between two red flowers is shown in the punnett square below. what is the genotype of the offspring in box x?

Explanation:

Step1: Analyze Punnett - square rules

In a Punnett - square, the alleles from the top and left - hand side combine to form the genotypes of the offspring. The allele on the top of the column and the allele on the left of the row for box X are both 'r'.

Step2: Determine the genotype

When two 'r' alleles combine, the genotype is 'rr'.

Answer:

B. rr