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What is a single cell called from which ...

What is a single cell called from which life of all organisms start?

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**Step-by-Step Solution:** 1. **Definition of the Single Cell**: The question asks for the name of the single cell from which life begins in all organisms. This cell is known as a zygote. 2. **Formation of the Zygote**: A zygote is formed when a female gamete (ovum) and a male gamete (sperm) unite. This process is called fertilization. 3. **Chromosomal Composition**: The zygote is a diploid cell, meaning it contains two sets of chromosomes. In humans, this totals 46 chromosomes, with 23 coming from the mother (ovum) and 23 from the father (sperm). ...
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