Question

question 2
how many chromosomes would a male with klinefelters syndrome have in each of his body cells?
a) 22
b) 46
c) 23
d) 47

Explanation:

Step1: Recall normal human chromosomes

Normal human body cells have 46 chromosomes (23 pairs), with males having XY sex chromosomes.

Step2: Analyze Klinefelter's syndrome

Klinefelter's syndrome in males is due to an extra X chromosome, so the sex chromosomes are XXY. Total chromosomes: 46 + 1 = 47.

Step3: Evaluate options

• A) 22: Incorrect (haploid sex cells, not body cells).
• B) 46: Normal, not Klinefelter's.
• C) 23: Haploid, incorrect.
• D) 47: Matches Klinefelter's chromosome count.

Answer:

D) 47