Genetic identity of a human male is determined by

Options

A. autosome
B. nucleolus
C. sex chromosome
D. cell organelies

Explanation

To determine the genetic identity of a human male, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Genetic Identity**: Genetic identity refers to the specific genetic makeup that defines an individual, including their sex.

2. **Identifying Chromosomes**: In humans, chromosomes are categorized into two main types: autosomes and sex chromosomes. Autosomes are the non-sex chromosomes, while sex chromosomes determine the sex of an individual.

3. **Sex Chromosomes in Humans**: Humans have a total of 46 chromosomes, which include 22 pairs of autosomes and 1 pair of sex chromosomes. The sex chromosomes are designated as X and Y.

4. **Male Genetic Composition**: In humans, males have one X chromosome and one Y chromosome, making their sex chromosome composition XY. This is different from females, who have two X chromosomes (XX).

5. **Determining Genetic Identity**: The presence of the Y chromosome is what specifically determines male characteristics. Therefore, the genetic identity of a human male is primarily determined by the sex chromosomes, specifically the Y chromosome.

6. **Conclusion**: Based on the above reasoning, the correct answer to the question is that the genetic identity of a human male is determined by sex chromosomes.

### Final Answer:
The genetic identity of a human male is determined by **sex chromosomes**.

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