What is the total number of chromosomes found in a human zygote?

A human zygote contains a total of 46 chromosomes, which is the result of the fusion of two gametes—one from the mother and one from the father. Each gamete contributes 23 chromosomes, leading to the zygote's diploid state of 46 chromosomes (23 pairs). This diploid number is critical because it ensures that the genetic material from both parents is combined, maintaining the species' chromosome count across generations.

In humans, the chromosome pairs consist of 22 pairs of autosomes and 1 pair of sex chromosomes, which determine the biological sex of the individual. This combination not only carries genetic information but also plays a crucial role in normal development and functioning. Understanding the zygote's chromosomal composition is foundational in genetics, biology, and related fields.