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** (1 point)
• some round and some wrinkled
O slightly wrinkled
O round
O wrinkled
Bot every time I ask you it’s wrong, please get it right.
The phenotype of a pea plant with genotype Rr is round.
In a Punnett square diagram, the genotype Rr can be represented as:
R r
R RR Rr
r Rr rr
As R is dominant over r, having even one copy of the R allele (as in the genotype Rr) will result in the round pea phenotype.
So which one
I apologize for the confusion. The correct answer is:
The phenotype of a pea plant with genotype Rr is round peas.
To determine the phenotype of a pea plant with genotype Rr, we can use a Punnett square. A Punnett square is a simple and visual tool that helps to predict the possible outcomes of a genetic cross.
To create a Punnett square, we'll place the possible gametes (sperm and egg) along the sides of the square. Since the plant's genotype is Rr, it produces two types of gametes: R and r. We'll write R above one column and r above another column. Next, we'll write the same letters on the rows as well. The resulting Punnett square would look like this:
R r
----------------
R | RR Rr
----------------
r | Rr rr
Now, we can observe the crosses in the square. The top left square shows RR, which represents a plant with two copies of the dominant allele (round peas). The top right and bottom left squares show Rr, which represents a plant with one copy of the dominant allele and one copy of the recessive allele (also round peas). The bottom right square shows rr, which represents a plant with two copies of the recessive allele (wrinkled peas).
From the Punnett square, we can see that out of the four possible combinations, only two have at least one dominant R allele, and the remaining two combinations have two recessive r alleles. Therefore, the phenotype of a pea plant with genotype Rr is round peas.
I hope this explanation helps you understand how to determine the phenotype using a Punnett square!