Populations, Not The Individual Evolves Case Study
Population Genetics
2 Explain the statement “Populations, not the individual, evolves.”
~The statement "It is the population that evolves, not the individual," means that a single organism cannot evolve by itself. Natural selection is survival of the fittest, so the adaptations are relative to each other.
3 Explain how Mendel’s particulate hypothesis of inheritance provided much needed support for Darwin’s theory of evolution by natural selection.
~Mendel's hypothesis of inheritance supported Darwin's theory of natural selection because Mendel's theory accounts for the more subtle variations within a population that are central to natural selection.
4 Distinguish between discrete and quantitative traits. Explain how Mendel’s laws …show more content…
Use the equation to calculate allele frequencies when the frequency of homozygous recessive individuals in a population is 25%.
~p^2+2pq+q^2=1; p+q=1; p=1-q; q=1-p ALLELE FREQUENCIES --> p^2 => .5 2pq =>.5 q^2 => .5
Mutation and Sexual Recombination
10 Explain why the majority of point mutations are harmless.
~The majority of point mutations are harmless because there are several arrangements that can code for one amino acid. For example, UCU and UCC both code for serine, so a point mutation changing the U into a C would be completely harmless.
11 Explain why mutation has little quantitative effect on allele frequencies in a large population.
~Mutations have little quantitative effect on allele frequencies in large populations because genetic drift also factors into allele frequencies. Mutations are the driving force behind natural selection, and due to genetic drift, mutations are not the only thing that factor into changing allele frequencies.
12 Describe the significance of transposons in the generation of genetic variability.
~if the gene mutation via transposons isn't harmful then it will be passed on through generations. This increases the number of genes that are passed on, playing a huge role in
2 Explain the statement “Populations, not the individual, evolves.”
~The statement "It is the population that evolves, not the individual," means that a single organism cannot evolve by itself. Natural selection is survival of the fittest, so the adaptations are relative to each other.
3 Explain how Mendel’s particulate hypothesis of inheritance provided much needed support for Darwin’s theory of evolution by natural selection.
~Mendel's hypothesis of inheritance supported Darwin's theory of natural selection because Mendel's theory accounts for the more subtle variations within a population that are central to natural selection.
4 Distinguish between discrete and quantitative traits. Explain how Mendel’s laws …show more content…
Use the equation to calculate allele frequencies when the frequency of homozygous recessive individuals in a population is 25%.
~p^2+2pq+q^2=1; p+q=1; p=1-q; q=1-p ALLELE FREQUENCIES --> p^2 => .5 2pq =>.5 q^2 => .5
Mutation and Sexual Recombination
10 Explain why the majority of point mutations are harmless.
~The majority of point mutations are harmless because there are several arrangements that can code for one amino acid. For example, UCU and UCC both code for serine, so a point mutation changing the U into a C would be completely harmless.
11 Explain why mutation has little quantitative effect on allele frequencies in a large population.
~Mutations have little quantitative effect on allele frequencies in large populations because genetic drift also factors into allele frequencies. Mutations are the driving force behind natural selection, and due to genetic drift, mutations are not the only thing that factor into changing allele frequencies.
12 Describe the significance of transposons in the generation of genetic variability.
~if the gene mutation via transposons isn't harmful then it will be passed on through generations. This increases the number of genes that are passed on, playing a huge role in