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On a karyotype, which pair(s) of chromosomes are always the sex chromosomes (no matter what the organism is)? A. the 23rd pair B. the last pair C. the first pair D. all of them
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On a karyotype, which pair(s) of chromosomes are always the sex chromosomes (no matter what the organism is)?

A. the 23rd pair B. the last pair C. the first pair D. all of them

User Nimit Khandelwal
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Answer:

(B) the last pair

Step-by-step explanation:

User Alexxjk
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