Human genetics — karyotype: A normal adult human male has which of the following chromosomal constitutions? Context: Total chromosome number and sex chromosomes. Choose the correct option.
General Knowledge
Biology
Difficulty: Easy
Choose an option
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A46 chromosomes: 44 autosomes + XY
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B46 chromosomes: 44 autosomes + XX
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C48 chromosomes: 46 autosomes + XY
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D23 chromosomes: 22 autosomes + Y
Answer
Correct Answer: 46 chromosomes: 44 autosomes + XY
Explanation
ConceptHumans are diploid with 2n = 46 chromosomes. A typical male has 44 autosomes + XY sex chromosomes; a typical female has 44 autosomes + XX.
EliminationOptions with XX or incorrect totals (48, 23) are wrong.
Final Answer46 (44 autosomes + XY).