How many pairs of chromosomes are present in a human zygote and where do they come from?

Explanation

To answer the question of how many pairs of chromosomes are present in a human zygote and where they come from, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Zygote Formation**:
- A zygote is formed through the process of fertilization, which is the fusion of two gametes: the male gamete (sperm) and the female gamete (egg).

2. **Chromosome Count in Gametes**:
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