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Questions and Answers
What is the primary purpose of meiosis?
What is the primary purpose of meiosis?
- To replicate DNA
- To create haploid cells for sexual reproduction (correct)
- To facilitate mitosis
- To produce energy for cell division
Crossing over occurs during metaphase I of meiosis.
Crossing over occurs during metaphase I of meiosis.
False (B)
Name one mechanism that promotes genetic variation during meiosis.
Name one mechanism that promotes genetic variation during meiosis.
Crossing over between non-sister chromatids, random assortment of homologous chromosomes, or fusion of gametes.
The fusion of gametes from different ______ contributes to genetic variation.
The fusion of gametes from different ______ contributes to genetic variation.
Match the following mechanisms with their descriptions:
Match the following mechanisms with their descriptions:
Flashcards
Crossing Over
Crossing Over
The exchange of genetic material between non-sister chromatids during meiosis I, resulting in new combinations of alleles.
Random Assortment
Random Assortment
The random alignment of homologous chromosome pairs during metaphase I of meiosis, leading to different combinations of chromosomes in gametes.
Gamete Fusion
Gamete Fusion
The process of two gametes, one from each parent, fusing to form a zygote.
Genetic Variation
Genetic Variation
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Meiosis
Meiosis
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Study Notes
Meiosis and Genetic Variation
- Meiosis produces haploid cells for sexual reproduction
- These haploid cells are genetically unique, increasing variation in offspring.
Mechanisms for Genetic Variation
- Crossing over between non-sister chromatids during prophase I.
- Random assortment of homologous chromosomes during metaphase I.
- Fusion of gametes from different parents.
Outcome of Genetic Variation
- Improved survival prospects for a species, promoting biodiversity.
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