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What can accumulate over successive generations to contribute to biological diversity?
Various mutations that occur over many, many generations will lead to different species. This is called speciation.
What is the relationship between uv exposure time and bacterial death?
Ultraviolet light can damage DNA molecules. If a cell's DNA repair mechanisms can't keep up with the damage, mutations are the result. As harmful mutations accumulate, the cell eventually dies. How much ultraviolet light is too much for a bacterial cell?
Why are stem cells frozen?
because if they weren't frozen, they would deteriorate - accumulate mutations, get damaged by their own waste metabolites etc. In frozen state, they do not metabolize or grow, thus they are free of these negative effects.
Changes in DNA are called mutations?
the answer is mutations.......................
Genetic information is alterd when changes in the DNA sequence is called?
It is called mutations. I'm 100% sure.
Why are only neutral mutations useful for molecular clocks?
Only neutral mutations are useful for molecular clocks because they accumulate in the DNA of different species at the same rate, while other mutations do not.
How can embryology show that organisms are related?
It can be a good indication because mutations affecting embryos are especially detrimental, and so such mutations accumulate less over time.
Why do different mutations accumulate in two species once they diverge?
Because they can no longer mate and swap the mutation
Why are there many molecular clocks in a genome instead of just one?
This occurs because some genes accumulate mutations faster than others.
Why are there many molecular clocks in one genome instead of just one?
This occurs because some genes accumulate mutations faster than others.
What is the main idea behind the model of of a molecular clock?
The main idea behind the model of a molecular clock is that neutral mutations accumulate at a steady rate.
How does helpful variation accumulate in a species?
*Variation appears mainly due to mutations and it accumulates via natural selection.* Re check this answer, its not answering it! I had hw. on it and it was wrong. Change it.
What can accumulate over successive generations to contribute to biological diversity?
Various mutations that occur over many, many generations will lead to different species. This is called speciation.
What is muller's ratchet?
In evolutionary genetics, Muller's ratchet (named after Hermann Joseph Muller and a mechanical device) is the process by which the genomes of an asexual population accumulate deleterious mutations in an irreversible manner.
What is the relationship between uv exposure time and bacterial death?
Ultraviolet light can damage DNA molecules. If a cell's DNA repair mechanisms can't keep up with the damage, mutations are the result. As harmful mutations accumulate, the cell eventually dies. How much ultraviolet light is too much for a bacterial cell?
Are mutations more common in sperm cells or egg cells?
It depends on the age of the person. There are more mutations and defects in eggs as the woman ages. However, as men are constantly producing more sperm cells they will inevitably produce more cells that have mutations. The percentage of sperms cells that have mutations will increase as the man ages.
Why are stem cells frozen?
because if they weren't frozen, they would deteriorate - accumulate mutations, get damaged by their own waste metabolites etc. In frozen state, they do not metabolize or grow, thus they are free of these negative effects.
