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When do primary oocytes complete Meiosis I?
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27. The Reproductive System
Meiosis
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How many Barr bodies does a normal human female contain in each diploid cell?
A
0
B
1
C
3
D
2
Guida verificata passo dopo passo1
Understand that Barr bodies are inactivated X chromosomes found in female cells. In a normal human female, there are two X chromosomes in each diploid cell.
Recognize that the number of Barr bodies is equal to the total number of X chromosomes minus one. This is because one X chromosome remains active while the others are inactivated.
Apply the formula: Number of Barr bodies = Number of X chromosomes - 1.
For a normal human female with two X chromosomes, substitute into the formula: Number of Barr bodies = 2 - 1.
Conclude that a normal human female contains one Barr body in each diploid cell.
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