How many chromosomes are present in a typical human cell?

Prepare for the Canadian National Institute of Health Entrance Exam. Study using flashcards and multiple-choice questions, each with hints and explanations. Ace your exam and advance in your academic journey at the CNIH!

In a typical human cell, there are 46 chromosomes. This number is a result of the diploid nature of human cells, meaning that they contain two sets of chromosomes: one set inherited from each parent. Specifically, humans have 23 pairs of chromosomes, which totals 46.

Chromosomes are structures within cells that contain DNA, which carries the genetic information essential for the growth, development, and functioning of the organism. Each pair consists of one maternal and one paternal chromosome, and this pairing is essential for processes like meiosis, where the chromosome number is halved to form gametes (sperm and eggs).

The other options do not represent the typical chromosome number in human somatic cells. For instance, 23 represents the number of chromosomes in a single gamete, while 92 would refer to a cell that has already undergone replication prior to cell division, leading to a temporary doubling of the chromosome count. The number 44 does not align with typical human genetics, as it does not account for one complete set from each parent.

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