Grasshopper is an example of XO type of sex determination in which the male have

Options

A. One X chromosome
B. One Y chromosome
C. Two X chromosome
D. No X - chromosome

Answer

To solve the question regarding the sex determination in grasshoppers, we will follow these steps:

### Step 1: Understand the XO type of sex determination
In the XO type of sex determination, males have one sex chromosome (X) and no second sex chromosome (O), while females have two sex chromosomes (XX). This system is different from the XY system found in humans.

**Hint:** Recall the difference between XO and XY systems in terms of the number of sex chromosomes.

### Step 2: Identify the male sex chromosome configuration in grasshoppers
In grasshoppers, males have only one X chromosome. Therefore, the male grasshopper's sex chromosome configuration is X0 (where '0' indicates the absence of a second sex chromosome).

**Hint:** Focus on the definition of heterogametic males in the XO system.

### Step 3: Compare with female sex chromosome configuration
In contrast, female grasshoppers have two X chromosomes (XX). This means that females are homogametic, producing only one type of gamete (X).

**Hint:** Remember that homogametic individuals produce the same type of gametes.

### Step 4: Determine the correct answer from the options given
Given the options:
1. 1X chromosome
2. 1Y chromosome
3. 2X chromosomes
4. No X chromosomes

The correct answer is **1X chromosome**, as male grasshoppers have one X chromosome and no Y chromosome.

**Hint:** Eliminate options that do not fit the XO sex determination system.

### Final Answer
The male grasshopper has **1X chromosome**.