Chromosomes I has ……..A…...genes and Y-chromosome has .....B…... genes.

Options

A. A - 4968, B - 123
B. A - 4986, B - 123
C. A - 8962, B - 231
D. A - 2968, B - 231

Answer

To solve the question regarding the number of genes on chromosome I and chromosome Y, we can follow these steps:

### Step 1: Understand the Chromosomes
- In humans, there are 23 pairs of chromosomes, which include 22 pairs of autosomes and 1 pair of sex chromosomes (X and Y).

### Step 2: Identify Chromosome I and Chromosome Y
- Chromosome I is the largest chromosome in humans, while chromosome Y is the smallest.

### Step 3: Determine the Number of Genes
- Chromosome I has approximately **2968 genes**.
- Chromosome Y has approximately **231 genes**.

### Step 4: Fill in the Blanks
- Therefore, we can fill in the blanks as follows:
- A = 2968 (for chromosome I)
- B = 231 (for chromosome Y)

### Step 5: Choose the Correct Option
- Now, we need to look at the provided options to find the correct one:
- Option 1: 4968123 (incorrect)
- Option 2: 4986123 (incorrect)
- Option 3: 8962231 (incorrect)
- Option 4: 2968231 (correct)

### Final Answer
- Chromosome I has **2968** genes and chromosome Y has **231** genes. The correct option is **2968231**.

---