Question

multiple choice question
genetic variation is produced during meiosis in all of the following ways except:

when gametes randomly combine

during crossing over

as chromosomes line up during prophase i

when two identical cells are produced

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Explanation:

• Crossing over (prophase I) swaps genetic material between homologous chromosomes, creating new allele combinations and genetic variation.
• Random alignment of chromosomes during metaphase I (not prophase I, but the option refers to chromosome lineup in meiosis) leads to independent assortment, producing varied gametes.
• Random gamete combination (fertilization, post-meiosis but related to meiotic products) creates unique zygotes.
• Producing identical cells is characteristic of mitosis; meiosis produces genetically distinct haploid cells, so this does not generate variation.

Answer:

when two identical cells are produced