What will be the gametic chromosome number of a cell if somatic cell have 40 chromosomes?10203040

1. Break Down the Problem

The gametic chromosome number is half of the somatic chromosome number since gametes are formed through meiosis. To find the gametic chromosome number, we need to divide the somatic chromosome number by 2.

2. Relevant Concepts

• Somatic Cells: These are any cells forming the body of an organism, excluding reproductive cells. Somatic cells are diploid (2n).
• Gametes: These are reproductive cells (like sperm and egg), and they are haploid (n), meaning they contain half the number of chromosomes found in somatic cells.

3. Analysis and Detail

• Given that the somatic cell has 40 chromosomes, we can denote this as: $\text{Somatic Cell Count} = 2n = 40$ Here, $n$ represents the gametic (haploid) chromosome number.

• To find the gametic chromosome number: $n = \frac{2n}{2} = \frac{40}{2} = 20$

4. Verify and Summarize

The calculations confirm that when the somatic chromosome number is 40, the gametic chromosome number is indeed 20.

Final Answer

The gametic chromosome number of a cell is 20.