Freshly released human egg has `

Options

A. one Y-chromosome
B. one X-chromosone
C. two X-chromosomes
D. Both (a) and (b)

Explanation

### Step-by-Step Solution

1. **Understanding the Freshly Released Human Egg**:
- A freshly released human egg, also known as an ovum, is the female gamete produced by the ovaries during the process of ovulation.

2. **Formation of the Egg**:
- The egg is formed from primary oocytes through a process called oogenesis. Each primary oocyte undergoes meiosis to produce a mature ovum.

3. **Chromosomal Composition**:
- The human egg contains a haploid set of chromosomes, which means it has 23 chromosomes. In terms of sex chromosomes, the human egg carries an X chromosome (XX for females).

4. **Fertilization Process**:
- When a sperm cell (which can carry either an X or Y chromosome) fertilizes the egg, it results in the formation of a zygote. The zygote is diploid, containing 46 chromosomes (23 pairs), including two sex chromosomes.

5. **Sex Determination**:
- The sex of the resulting embryo is determined by the type of sperm that fertilizes the egg. If the sperm carries an X chromosome, the resulting zygote will be XX (female). If the sperm carries a Y chromosome, the zygote will be XY (male).

6. **Development into Embryo**:
- After fertilization, the zygote undergoes several rounds of cell division and eventually develops into an embryo.

### Summary
A freshly released human egg is a haploid cell with 23 chromosomes, including one X chromosome. Upon fertilization by a sperm, it forms a diploid zygote that will develop into an embryo, with the sex determined by the sperm's chromosome.