Scelta multipla
What is one cause for genetic variation during meiosis?
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12. Meiosis
Genetic Variation During Meiosis
Scelta multipla
What is the term used to describe homologous chromosomes exchanging genetic material during meiosis?
A
Independent assortment
B
Synapsis
C
Segregation
D
Crossing over
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Understand the context: The problem is asking about a specific process that occurs during meiosis, which is a type of cell division that reduces the chromosome number by half and is essential for sexual reproduction.
Identify the key terms: Homologous chromosomes are pairs of chromosomes that have the same structure and carry the same genes, although they may have different alleles. Meiosis involves two main stages: meiosis I and meiosis II.
Focus on the process: During meiosis I, homologous chromosomes pair up in a process called synapsis. This pairing allows for the exchange of genetic material between the chromosomes.
Recognize the term: The exchange of genetic material between homologous chromosomes is known as 'crossing over.' This process increases genetic diversity by producing new combinations of alleles.
Clarify the options: Independent assortment refers to the random distribution of homologous chromosome pairs during meiosis, synapsis is the pairing of homologous chromosomes, and segregation is the separation of homologous chromosomes into different cells. Crossing over is the correct term for the exchange of genetic material.
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