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In crossing over the chomosomal segments of the homologous chromosomes get interchanged. Thus the genetic configuration of recessive and dominant genes gets altered and new gene combinations are formed which ultimately leads to the variation in the offsprings.
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The process of crossing over affects the variation in living things by?
Increasing variation
What phase in meiosis increases genetic variation?
Crossing-over
Is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis?
Crossing Over.
In what two ways does meiosis provide genetic variation?
The two sources of genetic variation in a cell during Meiosis are crossing-over during synapse and independent assortment.
What cause variation on an expected number on monohybrid cross?
The cause of variation are firstly genetic itself, 2nd) crossing over, 3rdly) indipendent assortment
The process of crossing over affects the variation in living things by?
Increasing variation
How does crossing over assist with variation among species?
No
Exchanging DNA segment during meiosis?
acts as a source of variation in spiecies.
Why is crossing over so important?
It increases genetic variation in organisms
What phase in meiosis increases genetic variation?
Crossing-over
What causes continuous variation in humans?
There is variation among humans because of sexual reproduction, crossing over, assortment, and mutations.
What is variation caused by?
It is caused by crossing over in sexual reproduction and random mutations in DNA.
What are the sources of variation in the offspring produced by sexual reproduction?
Random assortment & crossing-over
What would happen if crossing over didn't happen during meiosis in humans?
There would be less genetic variation in humans
What effect does crossing over in propahse 1 have on the cells?
Crossing over creates a genetic recombination of the DNA.
Does crossing over affect one or many genes?
Crossing over can effect on more then one gene i.e. at least two as in crossing over the genes of homologus chromatin get interchanged so it effect at least two genes and can effect or change more then two genes depend upon the linking and crossing over capability
What is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis?
Crossing Over.
