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Questions and Answers
What is the most likely cause of abnormal sex chromosomes like X (only have one X chromosome) or XXY (extra X chromosome)?
What is the most likely cause of abnormal sex chromosomes like X (only have one X chromosome) or XXY (extra X chromosome)?
- A normal egg was fertilized by a haploid sperm
- Nondisjunction occurred during meiosis (correct)
- An error occurred in mitosis of the fertilized egg
- Sex chromosomes in gametes are lost during fertilization
What is the most common chromosomal pattern in Klinefelter syndrome?
What is the most common chromosomal pattern in Klinefelter syndrome?
- 47, XXY (correct)
- 48, XXYY
- 45, X
- 46, XY
Nondisjunction is a genetic phenomenon that primarily occurs during which process?
Nondisjunction is a genetic phenomenon that primarily occurs during which process?
- Protein synthesis
- DNA replication
- Cell division (correct)
- Transcription
In chickens, which allele for feather color is dominant?
In chickens, which allele for feather color is dominant?
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In humans, what is the chromosomal pattern in Turner syndrome?
In humans, what is the chromosomal pattern in Turner syndrome?
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