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Multiple Choice
During Metaphase I of meiosis, which event provides a mechanism for vast genetic diversity?
A
Independent assortment of homologous chromosomes
B
Crossing over between homologous chromosomes
C
Formation of the mitotic spindle
D
Replication of DNA
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 Metaphase I is a stage in meiosis where homologous chromosomes line up along the metaphase plate.
Identify that during Metaphase I, independent assortment occurs, which is the random orientation of homologous chromosome pairs. This means that the maternal and paternal chromosomes are distributed randomly into the daughter cells.
Consider that crossing over, another mechanism for genetic diversity, occurs during Prophase I, not Metaphase I. It involves the exchange of genetic material between homologous chromosomes.
Conclude that the event providing a mechanism for vast genetic diversity during Metaphase I is the independent assortment of homologous chromosomes, as it leads to different combinations of maternal and paternal chromosomes in gametes.