Which of the following members show the same number of chromosomes in their gametes ?

Options

A. Honeybee and Hydra
B. Cockroach and mosquito
C. Monkey and frog
D. Housefly and fruitfly

Answer

To solve the question of which members show the same number of chromosomes in their gametes, we need to analyze the chromosome numbers of each organism listed. Here’s a step-by-step breakdown:

### Step 1: Understand Gametes and Chromosome Numbers
- Gametes are the reproductive cells (sperm and eggs) produced by organisms.
- The number of chromosomes in gametes is represented by "n" (haploid number), while the total number of chromosomes in somatic cells is represented by "2n" (diploid number).

### Step 2: List the Organisms and Their Chromosome Numbers
- **Honey Bee**: 2n = 32 → n = 16
- **Hydra**: 2n = 32 → n = 16
- **Cockroach**: 2n = 45 → n = 22.5 (not applicable as gametes must have whole numbers)
- **Mosquito**: 2n = 6 → n = 3
- **Monkey**: 2n = 48 → n = 24
- **Frog**: 2n = 26 → n = 13
- **Housefly**: 2n = 12 → n = 6
- **Fruit Fly**: 2n = 8 → n = 4

### Step 3: Identify Organisms with the Same Gamete Chromosome Number
- From the list, we see that both the **Honey Bee** and **Hydra** have the same haploid number of chromosomes in their gametes, which is n = 16.

### Step 4: Conclusion
- The organisms that show the same number of chromosomes in their gametes are the **Honey Bee** and the **Hydra**.

### Final Answer
The correct answer is **Honey Bee and Hydra**.

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