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? Make a punnet square for help
some round and some wrinkled
slightly wrinkled
round
wrinkled
The phenotype of a pea plant with genotype Rr is round.
Punnet square:
R r
R | RR Rr
r | Rr rr
this is not an optional answer
Apologies for the confusion. The correct phenotypic outcome for a pea plant with genotype Rr is round peas. The round allele (R) is dominant over the wrinkled allele (r), so even if the plant carries one round allele and one wrinkled allele, the round phenotype will be expressed.
To determine the phenotype of a pea plant with the genotype Rr, we can use a Punnett square. A Punnett square is a tool used in genetics to predict the possible genetic outcomes of a cross between two individuals.
In this case, the dominant allele R represents the round pea phenotype, and the recessive allele r represents the wrinkled pea phenotype. Since the R allele is dominant, having just one allele of R will result in the expression of the round phenotype.
To create a Punnett square, we would write the alleles for each parent along the top and left side of the square. In this case, both parents have the genotype Rr. The Punnett square would look like this:
R r
____________________
R | RR Rr
r | Rr rr
As you can see in the Punnett square, 50% of the offspring will inherit the R allele from one parent and the r allele from the other parent (genotype Rr), resulting in the round phenotype. The remaining 50% will inherit the r allele from both parents (genotype rr), resulting in the wrinkled phenotype.
Therefore, the phenotype of a pea plant with the genotype Rr is round.