Multiple Choice
Which scenario is likely to result in the most genetically diverse offspring?
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12. Meiosis
Genetic Variation During Meiosis
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Variation occurs when chromosomes are shuffled in _____.
A
mitosis
B
meiosis I
C
DNA replication
D
cytokinesis
Verified step by step guidance1
Understand the context: The question is asking about the process where chromosomes are shuffled, leading to genetic variation. This is a key concept in genetics and cell division.
Recall the two main types of cell division: mitosis and meiosis. Mitosis is responsible for producing identical daughter cells, while meiosis is involved in producing gametes (sperm and egg cells) with genetic variation.
Focus on meiosis: Meiosis consists of two stages, meiosis I and meiosis II. Meiosis I is where homologous chromosomes pair up and exchange genetic material through a process called crossing over, which contributes to genetic variation.
Eliminate incorrect options: Mitosis does not involve shuffling of chromosomes, as it produces identical cells. DNA replication occurs before cell division and does not shuffle chromosomes. Cytokinesis is the physical division of the cytoplasm and does not involve genetic variation.
Conclude that the correct answer is meiosis I, as this is the stage where homologous chromosomes are shuffled, leading to genetic variation.
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