What type of gametes will be formed by genotype RrYy ?

Options

A. RY, Ry, rY, ry
B. RY, Ry, ry, ry
C. RY, Ry, Yy, ry
D. Rr, RR, Yy, YY

Answer

To determine the types of gametes formed by the genotype RrYy, we can follow these steps:

### Step 1: Understand the Genotype
The genotype RrYy consists of two gene pairs:
- Rr: where R (dominant) represents round seeds and r (recessive) represents wrinkled seeds.
- Yy: where Y (dominant) represents yellow seeds and y (recessive) represents green seeds.

### Step 2: Identify Alleles
For each gene, we have two alleles:
- For the first gene (R/r), the alleles are R and r.
- For the second gene (Y/y), the alleles are Y and y.

### Step 3: Determine Possible Gametes
To find the possible gametes, we can use the combination of alleles from each gene. Each gamete will contain one allele from each gene.

- From Rr, the possible alleles are R and r.
- From Yy, the possible alleles are Y and y.

### Step 4: Combine the Alleles
Now, we will combine the alleles from both genes to form the gametes:
1. Combine R from Rr with Y from Yy → RY
2. Combine R from Rr with y from Yy → Ry
3. Combine r from Rr with Y from Yy → rY
4. Combine r from Rr with y from Yy → ry

### Step 5: List the Gametes
The possible gametes formed by the genotype RrYy are:
- RY
- Ry
- rY
- ry

### Final Answer
The types of gametes formed by the genotype RrYy are:
- RY
- Ry
- rY
- ry

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