Scelta multipla
Which of the following statements about the human X chromosome is correct?
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29. Heredity
Overview of Human Genetics
Scelta multipla
In a human skin cell, what proportion of the chromosomes are maternal chromosomes?
A
About 100%
B
About 25%
C
About 75%
D
About 50%
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Understand that human cells are diploid, meaning they contain two sets of chromosomes, one set from each parent.
Recognize that in a typical human cell, there are 46 chromosomes, organized into 23 pairs.
Each pair of chromosomes consists of one chromosome from the mother (maternal) and one from the father (paternal).
Since each pair has one maternal chromosome, the proportion of maternal chromosomes is 50% of the total chromosomes.
Conclude that in a human skin cell, about 50% of the chromosomes are maternal.
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