The block D has the recessive genotype.
Explanation:
The recessive genotype of a particular character is the genotype having both the recessive allele of that particular character. The recessive genotype expresses the recessive character which isn't seen in any other genetic combination. So recessive individuals are important ro determine.
Here only the last square has the individual with genotype bb which is the recessive genetic character of that organism. So the recessive characteristics is expressed by this organism only.
