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Course: AP®︎/College Biology > Unit 5

Lesson 5: Chromosomal inheritance
Science
AP®︎/College Biology
Heredity
Chromosomal inheritance
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Chromosomal inheritance

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Problem

The following diagram shows a karyotype of a certain human.
A karyotype with 23 pairs of chromosomes. Chromosome pair 1 is the largest and the pairs get increasingly smaller through pair 22. Chromosome pair 21 actually contains 3 chromosomes. Chromosome pair 23 is labeled uppercase X uppercase Y and contains a long and a short chromosome, while all other chromosome pairs contain identical chromosomes.
Based on the karyotype, which of the following statements is most likely true?
Choose 1 answer: