Which one of the following conditions correctly describes the manner of determining the sex in the given example

Options

A. Homozygous sex chromosomes (XX) produce male in Drosophila.
B. Homozygous sex chromosomes (ZZ) determine female sex in Birds.
C. XO type of sex chromosome determine male sex in grasshopper
D. XO condition in human as found in turner Syndrome, determine female sex.

Answer

To determine the correct condition that describes the manner of determining sex in the given examples, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Drosophila Sex Determination:**
- In Drosophila (fruit flies), males have the sex chromosomes XY, while females have XX.
- The statement claims that homozygous sex chromosome XX is produced in males, which is incorrect. Therefore, this option is false.

2. **Understanding Bird Sex Determination:**
- In birds, the male is represented by the homozygous sex chromosomes ZZ, while the female is heterozygous ZW.
- The statement claims that ZZ determines female sex, which is incorrect. Thus, this option is also false.

3. **Understanding Grasshopper Sex Determination:**
- In grasshoppers, males have one X chromosome (X0), while females have two X chromosomes (XX).
- The statement claims that X0 determines male grasshoppers, which is true. Therefore, this option is correct.

4. **Understanding Human Sex Determination:**
- In humans, males have XY chromosomes, while females have XX chromosomes.
- Turner syndrome is characterized by the absence of one X chromosome (X0), leading to a total of 45 chromosomes instead of the typical 46.
- The statement claims that X0 condition determines female sex, which is misleading. While individuals with Turner syndrome are indeed females, the presence of a Y chromosome is necessary for male determination. Therefore, this option is false.

### Conclusion:
The correct answer is that the X0 type of sex chromosome determines male grasshoppers.