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Why do you use non-sister chromatids to demonstrate crossing over?
Wiki User
∙ 12y ago
Crossing over occurs between homologous chromosomes, which are not identical, as one member of each pair of homologous chromosomes comes from the mother, and one member comes from the father. Sister chromatids are identical and crossing over would have no effect.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoBecause crossing takes place in non sister chromatids .
Wiki User
∙ 14y agoCrossovers between non-sister chromatids result in genetic recombination while the genetic messages remain identical if crossovers occur between sister chromatids.
Wiki User
∙ 11y agobecause if they used sister chromatids they could not be able to tell that there was change.
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What phase of meiosis do nonsister chromatids cross over?
Nonsister Chromatids Cross-over in Prophase 1
In meiosis what is crossing over?
Crossing over is the exchange of corresponding segments of DNA molecules by nonsister chromotids.
What is the appearance of two nonsister chromatids following crossing over?
It is important to include what the following is for a person to know the correct answer. With this information missing a person will not know what appearance of the chromatids is.
What is a process in which homologous chromosomes exchange portions of their chromatids during meiosis?
the process in which homologous chromosomes exchange portions of their chromatids during meiosis is the definition of the term "Crossing Over"
What is the site of crossing over between two non-sister chromatids?
Chiasma - The microscopically visible site where crossing over has occurred between chromatids of homologous chromosomes during prophase I of meiosis.
What phase of meiosis do nonsister chromatids cross over?
Nonsister Chromatids Cross-over in Prophase 1
When occurs between nonsister chromatids genetic exchange between chromosomes provides new combinations of genes that are different from the parent cell?
crossing over
Simplify meiosis into its basic events?
Homologous chromosomes pair up. Nonsister chromatids exchange segments in a process called crossing over. Because alleles etc.
In meiosis what is crossing over?
Crossing over is the exchange of corresponding segments of DNA molecules by nonsister chromotids.
What is the appearance of two nonsister chromatids following crossing over?
It is important to include what the following is for a person to know the correct answer. With this information missing a person will not know what appearance of the chromatids is.
What is a process in which homologous chromosomes exchange portions of their chromatids during meiosis?
the process in which homologous chromosomes exchange portions of their chromatids during meiosis is the definition of the term "Crossing Over"
Crossing over occurs in?
Each chromatid can synapse with any one it want/chooses.
What is the product crossing over?
Crossing over results in nonidentical sister chromatids of homologous chromosomes.
Are sister chromatids identical before crossing over occurs?
Yes they are attached at the centromere and remain identicle until crossing over occurs in prophase 1 of meosis
Why is it pointless for sister chromatids to crossover?
Crossing-over occurs between non-sister chromatids, since (prior to crossing-over) sister chromatids are genetically identical (i.e. one is a duplication of the other). Therefore, if sister chromatids underwent a cross-over, no genetic variation would occur.
The exchange of genetic material between chromatids is called?
Crossing over is the exchange of genetic material between chromatids. This is also known as synapsis, and it occurs during prophase one of meiosis.
What is the site of crossing over between two non-sister chromatids?
Chiasma - The microscopically visible site where crossing over has occurred between chromatids of homologous chromosomes during prophase I of meiosis.
