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Multiple Choice
Which process in meiosis results in increased genetic variation?
A
Formation of the mitotic spindle
B
Separation of sister chromatids during anaphase II
C
Cytokinesis
D
Crossing over during prophase I
Verified step by step guidance
1
Understand that meiosis is a type of cell division that reduces the chromosome number by half, creating four haploid cells, each genetically distinct from the parent cell.
Recognize that genetic variation is crucial for evolution and adaptation, and meiosis contributes to this variation through several mechanisms.
Identify that crossing over is a key process that occurs during prophase I of meiosis. During this stage, homologous chromosomes pair up and exchange segments of genetic material.
Realize that crossing over results in new combinations of alleles on each chromosome, which increases genetic diversity among the gametes produced.
Conclude that among the options given, crossing over during prophase I is the process that directly results in increased genetic variation.