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In meiosis I, segregation of chromosomes...that is, separating off into pairs, allows for crossing over to occur. Crossing over is one mechanism responsible for gene recombination to occur, and genetic recombination is one way that variations in traits increase.
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∙ 10y ago
kauth motlhabani
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∙ 12y agocross over happens during meiosis. what you have to keep in mind is meiosis id totally random. its like throwing a a blue and red deck of cards in the air and picking up RANDOMLY 23 of them. crossover happens in prophase 1. after the DNA organizes and the DNA copies, the chromotid tips touch- 46 pairs are touching, 23 of the 46 chromosomes touch/ cross over, remember this is completely random.also keep in mind that it is the mothers chromotid tip connecting with the fathers cromotid tips. now the reason this causes genetic variation is because everything is random and some traits are dominant and others a recessive. now the reason mutations cause genetic variations is because when the RNA copies wrong it cuases a mutation witch means somthing difforent type of cell has been made. if this new "mutated" cell gets into the gene pool then you have a new species. this = evolution.
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∙ 15y agobecause crossing over exchanges genes to make a new gene wooh
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∙ 15y agoCrossing over: During meiosis, two chromosomes may exchange segments, producing genetic variations.
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∙ 11y agobecause mutations provides new allele for species of a population, which creates genetic variation
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What is the cause of a genetic disorder?
A mutation in the gene makeup of the organism.
A change in the genetic material of a cell is called?
Cancer- certain mutations (changes) in a cell's genetic material may cause that cell to reproduce with out control.
Can genetic mutation be sped up by ultra violet rays?
UV rays and other radiation can indeed cause mutation.
What might the Mutation of a genetic material cause?
Lots of things, the most common of which is cancer.
How can prophase I and metaphase I in meiosis cause genetic variation in offerspring?
by being cheesy Edited answer: During prophase I of meiosis pairing among homologous chrosomes takes place. This is followed by crossing over. The recessive and dominant genes get interchanged during chiasma formation and such interchanged genetic material get separated in to different cells during mtaphase I. Hence, prophase I and metaphase I cause genetic variations in the male and female gametes. On randum mating among these gametes, genetic variation in the offsring are caused.
What can a genetic mutation cause?
A genetic mutation can cause a variation, which may be harmless, or may be harmful, depending on where on the DNA molecule it occurs.
Which process is a cause of variation in a species?
Sexual Reproduction Genetic mutation
Relate genetic variation and mutations to each other?
mutations cause genetic variation, and vice-versa. If there is a genetic variation (or lack of one), then this can effect the severity of the mutation.
What genetic mutations can cause?
A genetic mutation can cause a variation, which may be harmless, or may be harmful, depending on where on the DNA molecule it occurs.
What cause variation on an expected number on monohybrid cross?
The cause of variation are firstly genetic itself, 2nd) crossing over, 3rdly) indipendent assortment
What two processes can lead to inherited variation in populations?
Natural selection and Mutation . Cause new variations of traits in a population .
What is a major cause of variation within species?
Variation of a species can come about in many ways, but mutation is the major cause of variation in a species.
What can radiation cause?
Radiation can cause sunburn, cancer, genetic mutation.
What is the cause of a genetic disorder?
A mutation in the gene makeup of the organism.
Change in genetic material of an organism from one genrartion to another?
When mutations happen, they cause the alteration of genetic material.
What characteristic within populations cause natural selection to occur?
Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.
A change in the genetic material of a cell is called?
Cancer- certain mutations (changes) in a cell's genetic material may cause that cell to reproduce with out control.
