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:
The exchange of DNA takes place in prophase
The correct answer is: Crossing over
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.
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