Multiple Choice
In the context of sex chromosomes, how many chromosomes are present in a typical human diploid cell?
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3. Extensions to Mendelian Inheritance
Sex Chromosome
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following cell types has 23 unpaired chromosomes?
A
Human liver cell
B
Human skin cell
C
Human sperm cell
D
Human red blood cell
Verified step by step guidance1
Step 1: Understand the difference between haploid and diploid cells. Haploid cells contain one set of unpaired chromosomes, while diploid cells contain two sets of paired chromosomes.
Step 2: Recall that human somatic (body) cells, such as liver and skin cells, are diploid and have 46 chromosomes arranged in 23 pairs.
Step 3: Recognize that human gametes (sperm and egg cells) are haploid, meaning they contain 23 unpaired chromosomes, which is half the number found in somatic cells.
Step 4: Consider the human red blood cell, which typically lacks a nucleus and therefore does not contain chromosomes.
Step 5: Conclude that the cell type with 23 unpaired chromosomes is the human sperm cell, as it is a haploid gamete.
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