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Crossing over when pieces of homologous chromosomes are exchanged
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∙ 12y ago
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Differences between mitosis and meiosis?
place of occurence ;mitosis= somatic cells | meiosis=gonadic cells crossing over;mitosis=does not occur | meiosis=occur during prophase of meiosis 1 to form tetrads number of daughter cell;mitosis=two | meiosis= four genetic variation;mitosis=no variation produced| meiosis=produces genetic variation genetic composition in daughter cell; mitosis=identical to the parent cell | meiosis= non identical to the parent cell and each other
When does Variation produced by sexual reproduction starts?
during meiosis
What is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis?
Crossing Over.
What is the important event during meiosis that results in genetic variation?
Crossing-Over
Which is responsible for most genotypic and phenotypic variation among humans 1 meiosis 2 budding 3 mitosis or 4 regeneration?
Budding , mitosis and regeneration have no link with genetic variation.All variations in human being and other organisms are produced by MEIOSIS. During meiosis following important processes take place which include 1; crossing over in Prophase I ; Independent assortment of chromosomes and genes during Metaphase I , both of them result in reshufling of genes which is base of variation. Another source of variation is MUTATION.
What is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis.?
What is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis.?
What is relationship between gametes and genetic variation?
CrossoverRandom AssortmentRandom Mutation
What two factors introduce genetic variation during the process of meiosis?
The two factors that introduce genetic variation during the process of meiosis are independent assortment and chromosomal crossover. These occur during prophase 1 and anaphase 1 of meiosis.
Differences between mitosis and meiosis?
place of occurence ;mitosis= somatic cells | meiosis=gonadic cells crossing over;mitosis=does not occur | meiosis=occur during prophase of meiosis 1 to form tetrads number of daughter cell;mitosis=two | meiosis= four genetic variation;mitosis=no variation produced| meiosis=produces genetic variation genetic composition in daughter cell; mitosis=identical to the parent cell | meiosis= non identical to the parent cell and each other
Does meiosis have variation?
During meiosis, genetic recombination of homologous chromosomes occurs. So meiosis does result in genetic variation. After prophase I, during which crossing over occurs, every chromosome will have some maternal DNA and some paternal DNA.
When does Variation produced by sexual reproduction starts?
during meiosis
When does the variation produced by sexual reproduction start?
During meiosis.(:
Is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis.?
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What is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis?
Crossing Over.
Is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis?
Crossing Over.
What is the important event during meiosis that results in genetic variation?
Crossing-Over
What process during meiosis leads to genetic variation?
DNA organizes into chromosomes within the nucleus
