LABORATORY REVIEW
MITOSIS AND MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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meiosis
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mitosis
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crossing over
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replication
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Detailed explanation-1: -Crossing over, as related to genetics and genomics, refers to the exchange of DNA between paired homologous chromosomes (one from each parent) that occurs during the development of egg and sperm cells (meiosis).
Detailed explanation-2: -Prophase I Figure 1: Recombination is the exchange of genetic material between homologous chromosomes. During prophase I, the chromosomes condense and become visible inside the nucleus.
Detailed explanation-3: -Chromosomes exchange genetic material during meiosis in a process called crossing over.
Detailed explanation-4: -Homologous chromosomes pair in a process called as synapsis during zygotene phase of prophase I of meiosis I. It allows matching-up of homologous pairs prior to their segregation and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis.