Scelta multipla
In a human skin cell, what proportion of the chromosomes are maternal chromosomes?
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29. Heredity
Overview of Human Genetics
Scelta multipla
How many chromosomes do human somatic cells contain?
A
92 chromosomes
B
46 chromosomes
C
23 chromosomes
D
69 chromosomes
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Understand that human somatic cells are any cells forming the body that are not germ cells (sperm or egg cells).
Recall that human somatic cells are diploid, meaning they contain two sets of chromosomes, one from each parent.
Each set of chromosomes in humans consists of 23 chromosomes, so a diploid cell contains 2 sets of 23 chromosomes.
Calculate the total number of chromosomes in a human somatic cell by multiplying the number of chromosomes in one set by two: 23 chromosomes/set * 2 sets.
Conclude that the total number of chromosomes in a human somatic cell is 46.
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