Types of gametes formed by the plant with genotype AABbccDD will be

Options

A. 4
B. 16
C. 8
D. 2

Answer

To determine the types of gametes formed by a plant with the genotype AABbccDD, we can follow these steps:

### Step 1: Identify the genotype components
The genotype AABbccDD consists of:
- A: Homozygous dominant (AA)
- B: Heterozygous (Bb)
- C: Heterozygous (cc)
- D: Homozygous dominant (DD)

### Step 2: Understand the significance of homozygous and heterozygous
- **Homozygous** (AA, DD, cc): These alleles are identical, meaning they will produce only one type of allele in the gametes.
- **Heterozygous** (Bb): This allele is different, meaning it can produce two types of alleles in the gametes.

### Step 3: Determine the gametes from each gene
- From **A (AA)**: Only one type of gamete can be produced, which is A.
- From **B (Bb)**: Two types of gametes can be produced, which are B and b.
- From **C (cc)**: Only one type of gamete can be produced, which is c.
- From **D (DD)**: Only one type of gamete can be produced, which is D.

### Step 4: Calculate the total number of gamete types
To find the total number of different types of gametes, we use the formula \(2^n\), where \(n\) is the number of heterozygous gene pairs. In this case, there is only one heterozygous gene (B).

Thus, \(n = 1\):
\[ \text{Total types of gametes} = 2^1 = 2 \]

### Step 5: List the possible gametes
The possible combinations of alleles from the gametes are:
1. ABcD
2. AbcD

### Conclusion
The plant with the genotype AABbccDD can produce **2 types of gametes**: ABcD and AbcD.

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