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Describe how evolutionary change change happens include genetic variation?
Wiki User
∙ 12y ago
mutations
Wiki User
∙ 12y ago
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What happens to a population when genetic variation decreases?
Less sex mutation and changes in DNA, I think?
What can mutations be a source of?
Mutations create changes in the genetic code. There are different types of mutations and vary in degree of harm or even benefit to the organism. If the mutation happens to be beneficial to the organism, then it can be passed down to its offspring and thus this leads to genetic variation in the population.
What happens in the S phase of the cell cycle?
Synthesis. The replication of the genetic material basically.
What happens in the tetrad stage?
During the tetrad stage, the metaphase I of meiosis starts to happen. When this occurs, the diploid meiocyte divides twice.
An scientific example of bottleneck effect?
(In biology) The bottleneck effect happens when the size of a population or even an entire species is suddenly reduced, with lasting effects on at least one generation. A population bottleneck may occur after an epidemic, drought, fire, hunting, or other destructive events.
What causes genetic variation in a species?
genetic variation happens because of meiosis. chromosomes are randomly in each sperm/egg cell, and so when they come together it's unlikely to get the same combination twice
What happens after meiosis to introduce even more genetic variation in sexually reproduced organisms?
fusion of gametes via fertilization
What happens to a population when genetic variation decreases?
Less sex mutation and changes in DNA, I think?
What can mutations be a source of?
Mutations create changes in the genetic code. There are different types of mutations and vary in degree of harm or even benefit to the organism. If the mutation happens to be beneficial to the organism, then it can be passed down to its offspring and thus this leads to genetic variation in the population.
What happens chromosomes undergo crossing-over?
During meiosis, permutation.
How does a sexual life cycle increase genetic variation?
Well, if an organism reproduces asexually then it only has the genetic information from itself to use in creating a new organism. With sexual reproduction, the organism has the genetic information from more than one organism to use, which produces more varied organisms, and it becomes more varied the more different genetic information is used over generations.
Does genetic drift increase or decrease genetic variation in populations and why?
It is important to understand that each individual has different genes. Genes can be lost if an individual dies without reproducing. To answer your question: There are two type of effects caused by Genetic Drift. The founder effect happens when a few species inhabit a new territory. If only those species reproduce then there are less genes in the gene pool and that leads to less variation. This can happen if storms sweep birds to a previously uninhabited island. The other effect is the bottleneck effect. This happens if a disease or poaching drastically reduces the number of individuals in a population. Since there are less individuals who can reproduce there are not as many genes that can be passed down.
Is Dymphna a variation of Daphne?
yes and no
What happens to genetic information before a cell divides?
The genetic information is duplicated, so that each new cell has the same genetic code as the original.
Summarizing current details about the evolutionary process?
The evolutionary theory is currently apprised of many different aspects. One of the biggest things is that evolution happens through natural selection and survival of the fittest.
In the inverse variation function what happens to the output when the function's input is halved?
The output is doubled.
In the inverse variation function what happens to the output when the functions input is doubled?
the output is halved
