Genetics Unit Test

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Question
In pea plants, the allele for round peas, R, is dominant over the allele for wrinkled peas, r. What is the phenotype of a pea plant with genotype Rr?(1 point)
Responses

round
round

slightly wrinkled
slightly wrinkled

some round and some wrinkled
some round and some wrinkled

wrinkled

round

What determines a trait of an organism?(1 point)

Responses

the number of copies of the gene
the number of copies of the gene

the number of dominant alleles
the number of dominant alleles

the combination of its alleles
the combination of its alleles

its phenotype
its phenotype

the combination of its alleles

To determine the phenotype of a pea plant with the genotype Rr, we need to understand the concept of dominance in genetics. In this case, the allele for round peas (R) is dominant over the allele for wrinkled peas (r).

To find the phenotype, we look at the dominant allele. Since the plant has one dominant allele (R) and one recessive allele (r), the plant will exhibit the characteristics of the dominant allele. Therefore, the phenotype of a pea plant with genotype Rr is round.

So, the correct answer is: round.