Multiple Choice
What is the importance of crossing over during meiosis for the new daughter cells?
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12. Meiosis
Genetic Variation During Meiosis
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What is the importance of crossing over during meiosis?
A
It prevents mutations from occurring during cell division.
B
It ensures that each daughter cell receives an identical set of chromosomes.
C
It reduces the number of chromosomes in the daughter cells.
D
It increases genetic variation by exchanging DNA between homologous chromosomes.
Verified step by step guidance1
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 crossing over occurs during prophase I of meiosis, where homologous chromosomes pair up and exchange segments of DNA.
Learn that this exchange of DNA between homologous chromosomes results in new combinations of alleles, contributing to genetic diversity in the offspring.
Realize that increased genetic variation is crucial for evolution and adaptation, as it provides a wider range of traits for natural selection to act upon.
Conclude that crossing over is important because it increases genetic variation, which is essential for the survival and evolution of species.
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