GROWTH DEVELOPMENT CHILD
GROWTH AND DEVELOPMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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two chromatids get tangled, resulting in one resequencing its DNA
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two sister chromatids exchange identical pieces of DNA
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segments of DNA from non-sister chromatids are exchanged
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maternal alleles are “corrected” to be like paternal alleles
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Detailed explanation-1: -Crossing over occurs between prophase I and metaphase I and is the process where two homologous non-sister chromatids pair up with each other and exchange different segments of genetic material to form two recombinant chromosome sister chromatids.
Detailed explanation-2: -Crossing over is the exchange of corresponding parts between non-sister chromatids of homologous chromosomes producing a new combinations during gamate formation. It occurs during the prophase-I of the first meiotic division.
Detailed explanation-3: -Exchange of segments between non sister chromatids of homologous chromosomes is called crossing over. It occurs during pachytene stage of prophase I in meiosis.
Detailed explanation-4: -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-5: -Crossing over is a cellular process that happens during meiosis when chromosomes of the same type are lined up. When two chromosomes-one from the mother and one from the father-line up, parts of the chromosome can be switched. The two chromosomes contain the same genes, but may have different forms of the genes.