A Diploid Somatic Cell from a Rat Has a Total

question 2

Multiple Choice

A diploid somatic cell from a rat has a total of 42 chromosomes (2n = 42) . As in humans, sex chromosomes determine sex: XX in females and XY in males. What is the total number of chromosomes in a polar body cell from a rat?

• A) 21
• B) 40
• C) 41
• D) 42
• E) 84

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