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Which of the following would be most likely to decrease genetic variability. A bottleneck B B genetic drift C mutation D random mating?
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What are the sources of genetic variation in bacteria and humans?
The most important source of variability in bacteria is mutation.
Does mutation depend on evolution?
The mutation theory is basically stating that mutation is one of the major factors that cause evolution. The mutation has to be a beneficial mutation, meaning that it has to help the survival of the organism that got the mutation. The mutation causes knew genes and diversity which can spread quickly throughout a population and eventually change the frequency of alleles (causes mutation) Remember the mutation has to be beneficial to the survival 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.
Which mutation results in a single missing letter in the genetic code?
frameshift mutation: deletion
I think I am the product of genetic mutation What should I do?
If you think you have a large genetic mutation, consult your doctor.
What disadvantages are there to asexual reproduction?
There is no genetic variability, (unless some random mutation occurs)
List the three conditions that are necessary and sufficient for natural selection to act on a?
A beneficial mutation leading to variability in a population and the heritability of those beneficial traits.
What are the sources of genetic variation in bacteria and humans?
The most important source of variability in bacteria is mutation.
Which of the following could be described as a chromosomal mutation?
A chromosomal mutation can occur for a variety of reasons. Some people think that DownÕs syndrome is a mutation but it is more an additional chromosome than a mutation.
Which of the following situations is most usual for a dominant allele that results in severe effects in the offspring?
The trait occurs by mutation.
Chemical q causes the following change in the sequences of nucleotides?
Point mutation.
Which one of the following statements regarding Nucleotides is false?
It is always known as a mutation
What is relationship between gametes and genetic variation?
CrossoverRandom AssortmentRandom Mutation
What difference does it make if a mutation occurs in a somatic cell or in a gamete?
If the mutation occurs in a somatic cell and the cell is still able to reproduce, the mutation continues in the daughter cells in following generations. If a mutation occurs in a gamete, the original organism remains unchanged. If that gamete is used for reproduction, then the mutation will continue in the offspring.
who wants to write an example of a frameshift mutation using the following sentence: THE CAT SAW THE RAT. Which sentence best shows a frameshift mutation?
A. THC ATS AWT HER AT.
What process provides the genetic variability that natural selection acts on during evolution?
The ultimate source of variation is mutation. However, recombination, or crossing over, can produce enormous amounts of variation by shuffling alleles into different combinations. Combined, the two processes produce the variation upon which natural selection can act, and which results in evolution.
Decrease in stratospheric ozone concentrations may?
... lead to increases in cataracts, cancer, mutation, decrease in crop yields, and loss of arable land. Also the day-night temperature swings will increase, and the sky will not appear as blue in the daytime.
