Variation
What is variation?
any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences
What is inheritance?
the passing of genetic information from parent to child through the genes in sperm and egg cells.
What is selection?
the preferential survival and reproduction or preferential elimination of individuals with certain genotypes, by means of natural or artificial controlling factors.
What is adaptation?
the biological mechanism by which organisms adjust to new environments or to changes in their current environment
What is time?
How long the time between the changes of the organisms.
Which type of selection tends to increase genetic variation?
What is an inherited trait?
a trait or variants encoded in DNA and passed from parent to offspring during reproduction.
What is the theory of Natural Selection?
Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success.
What name is given to a feature of an organism that improves its chances of survival?
Evolutionary adaptation, or simply adaptation, is the adjustment of organisms to their environment in order to improve their chances at survival in that environment.
How long can evolution be?
Timeless
What are two main sources of genetic variation?
What is the distinction between meiosis and mitosis?
Mitosis produces two genetically identical “daughter” cells from a single “parent” cell, whereas meiosis produces cells that are genetically unique from the parent and contain only half as much DNA.
What is the difference between artificial selection and natural selection?
When is an organism no longer well adapted?
When the previous adaptations are no longer suitable for changes in the environment
How long have humans been on this planet?
190000 B.C.E
What is the relationship between meiosis and genetic variation?
How are genotypes and phenotypes related?
A person's genotype is their unique sequence of DNA
What is the survival of the fittest?
Over many generations, what would the number of well-adapted organisms in a population be expected to do?
increase until it becomes a general attribute of the species.
How does time affect evolution?
organisms with shorter generation times evolve faster because of the accumulation of more DNA replication errors per unit time.
Why is genetic variation important?
allowing wild populations to survive, reproduce, and adapt to future environmental changes.
How similar are the genes of different species?
Because of our similarities, chimpanzees have a similar immune system to humans, which means they're susceptible to viruses such as AIDS and hepatitis.
How is natural selection related to genetics?
If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation
What is a physiological adaptation?
Will animals continue to grow in respect to time?
Yes