Podcast
Questions and Answers
During which phase of meiosis does crossing over occur?
During which phase of meiosis does crossing over occur?
- Telophase II
- Prophase I (correct)
- Metaphase II
- Anaphase I
What is the primary function of crossing over?
What is the primary function of crossing over?
- To repair damaged DNA
- To exchange genetic material between homologous chromosomes (correct)
- To ensure identical genetic copies are produced
- To reduce the number of chromosomes in daughter cells
What is the direct result of genetic material exchange during crossing over?
What is the direct result of genetic material exchange during crossing over?
- Variation amongst the offspring (correct)
- Duplication of chromosomes
- Increased risk of genetic mutations
- Decreased genetic diversity in offspring
Which structures physically overlap during the crossing over process?
Which structures physically overlap during the crossing over process?
What cellular process is essential for the alignment of homologous chromosomes before crossing over?
What cellular process is essential for the alignment of homologous chromosomes before crossing over?
Flashcards
Crossing Over
Crossing Over
The exchange of genetic material between homologous chromosomes.
Prophase 1
Prophase 1
The first stage of meiosis where crossing over occurs.
Homologous Chromosomes
Homologous Chromosomes
Pairs of chromosomes that are similar in shape, size, and genetic content.
Chromatid Overlap
Chromatid Overlap
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Genetic Variation
Genetic Variation
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Study Notes
Crossing Over
- Occurs during Prophase I of meiosis.
- Involves the exchange of genetic material between homologous chromosomes.
- Results in variation among offspring.
- Homologous chromosomes pair up.
- Corresponding chromatids of homologous chromosomes overlap.
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