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The exchange of genetic material between homologous chromosomes during meiosis
publish date: 2026/06/16 11:19:5.480741 UTC
During the first meiotic division, homologous chromosomes pair up. While paired, they may exchange segments of genetic material.
This exchange process is called (1).
Please drag and drop the selected option in the right place or type it instead
crossover
binary fission
cytokinesis
translation
Correct Answer
(1) crossover
Explanation
Crossover (or crossing over) is the exchange of corresponding segments between homologous chromosomes during the first meiotic division. This process generates new combinations of alleles (genetic recombination), which is a major source of genetic variation among offspring. It is unique to meiosis and does not occur during mitosis.
Reference
Biology: A Self-Teaching Guide