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Down syndrome is an example of trisomy. How many chromosomes will each cell of an individual have in Down syndrome? 46 chromosomes 47 chromosomes 45 chromosomes
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Down syndrome is an example of trisomy. How many chromosomes will each cell of an individual have in Down syndrome?

46 chromosomes
47 chromosomes
45 chromosomes

User Coldbuffet
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47 chromosomes is the correct answer. Humans have 23 pairs of chromosomes, making 46 chromosomes in total. Down's syndrome is the addition of an extra chromosome on chromosome 21, leading to an uneven number.
User Nathan Lachenmyer
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