science
Grade-10
Easy
Question
In prophase I of meiosis I __________ occurs.
Non-disjunction
Separation of homologous chromosomes
Separation of sister chromatids
Crossing over
Non-disjunction
Separation of homologous chromosomes
Separation of sister chromatids
Crossing over
Hint:
In prophase I of meiosis I Crossing over occurs.
The correct answer is: Crossing over
- The first meiosis, meiosis I, begins in prophase I. In prophase, I, a complex of DNA and proteins known as chromatin condenses to form chromosomes.
- Duplicated pairs of chromosomes, known as sister chromatids, remain connected at a central point called the centromere. This process is also called crossing over.
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