Multiple Choice
Which two genes are most likely to be affected by a crossing over event during meiosis?
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12. Meiosis
Genetic Variation During Meiosis
Multiple Choice
What is independent assortment and how does it contribute to genetic variation during meiosis?
A
Independent assortment is the replication of DNA before cell division, ensuring genetic consistency.
B
Independent assortment is the random distribution of maternal and paternal chromosomes into gametes, increasing genetic variation.
C
Independent assortment is the exchange of genetic material between homologous chromosomes, leading to genetic variation.
D
Independent assortment is the alignment of chromosomes along the metaphase plate, which does not affect genetic variation.
Verified step by step guidance1
Understand the concept of independent assortment: It refers to the random distribution of maternal and paternal chromosomes into gametes during meiosis, contributing to genetic variation.
Recognize the phase of meiosis where independent assortment occurs: It takes place during metaphase I, when homologous chromosomes align at the metaphase plate.
Consider how independent assortment increases genetic variation: Each gamete receives a random mix of maternal and paternal chromosomes, leading to a variety of genetic combinations.
Differentiate independent assortment from other processes: Unlike crossing over, which involves the exchange of genetic material, independent assortment is about the random alignment and separation of chromosomes.
Reflect on the importance of genetic variation: Genetic variation is crucial for evolution and adaptation, as it provides a diverse pool of traits that can be beneficial in changing environments.
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