CELL DIVISION
MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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random mutations
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decreased gamete number
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offspring with unique combinations of traits
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decreased number of alleles on each chromosome
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Detailed explanation-1: -Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome.
Detailed explanation-2: -Recombination in meiosis. Recombination occurs when two molecules of DNA exchange pieces of their genetic material with each other. One of the most notable examples of recombination takes place during meiosis (specifically, during prophase I), when homologous chromosomes line up in pairs and swap segments of DNA.
Detailed explanation-3: -Crossing over is a process by which chromatids of homologous chromosomes exchange portions of genetic material, usually during tetrad formation of meiosis.
Detailed explanation-4: -During prophase I, the homologous chromosomes condense and become visible as the x shape we know, pair up to form a tetrad, and exchange genetic material by crossing over. During prometaphase I, microtubules attach at the chromosomes’ kinetochores and the nuclear envelope breaks down.
Detailed explanation-5: -Answer and Explanation: Pairs of homologous chromosomes come together at the very beginning of meiosis-in prophase I.