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: Identify the Alleles
The genotype RrYy consists of two gene pairs:
- The first gene pair is Rr, which includes the alleles R (dominant) and r (recessive).
- The second gene pair is Yy, which includes the alleles Y (dominant) and y (recessive).

### Step 2: Determine Gamete Combinations
To find the gametes, we need to consider all possible combinations of the alleles from the two gene pairs. Each gamete will receive one allele from each gene pair.

### Step 3: List Possible Gametes
From the Rr gene pair, the possible alleles are:
- R
- r

From the Yy gene pair, the possible alleles are:
- Y
- y

Now, we can combine these alleles to form the gametes:
1. RY (from R and Y)
2. Ry (from R and y)
3. rY (from r and Y)
4. ry (from r and y)

### Step 4: Final List of Gametes
Thus, the four types of gametes formed by the genotype RrYy are:
- RY
- Ry
- rY
- ry

### Conclusion
The gametes formed by the genotype RrYy are RY, Ry, rY, and ry.

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