it is the change across generation in proportion to individuals who differ genetically in traits within a population which leads to new entities possessing different state of one or more characteristics.
what the scientific method consists of
making an observation
making an assertion or hypothesis
doing an experiment
why is knowledge important scientifically, socially, and from a practical point of view?
1. it is a unifying theme of all biology
2. misguided information about evolution can be used to defend social inequality, racism, and to attack the scientific method.
3. it has practical uses such as medicine, climate change and pest control.
why is evolution a fact?
because of all the facts that demonstrate how evolution has happened.
why is evolution considered a theory
there are a collection of tests and supported hypotheses to explain the facts.
what four lines of evidence did darwin use to develop the idea of evolution by natural selection
3. population biology
4. artificial selection
what five lines of evidence based on historical biogeography
1. the islands are similar but different
2. the islands are similar to but different than the mainland.
3. the islands are young
4. different forms on different islands
5. all thought the islands have similar geological histories and environments the fauna is different
beleived offspring inherited phenotype from the parents
suggested the processes that build land forms take eons of time
wrote the principles of geology
observed that sooner or later population gets checked by famine
wrote fundamental theorem of evolution
we are sitting in a cave with the fire to our backs
said, nothing in biology makes sense except in the light of evolution
discovered the moons of jupiter
a biology teacher taught evolution in the classroom
it was incorporating genetic mechanisms of inheritance into evolution principles
the process by which the genetic code of a gene is used to direct protein synthesis
what two processes result in same gendered siblings looking differently than each other
independent assortment of alleles
a type of dominance where the dominant gene completely masks the effect of the recessive allele
the condition of a heterozygote having a phenotype that is more pronounced or better adapted than that of either homozygote
when a single gene has more than one dominant allele
the interaction between two or more genes to control a single phenotype
the phenotype depends on alleles in multiple genes
when one gene influences multiple phenotypic traits
two or more discreet forms within a population
predictable variation in phenotype along a geographic or ecological gradient
marked variation in the phenotype due to the environment only
rate of evolution by natural selection in a trait is positively dependent on amount of genetic variation underlying the trait
fisher's fundamental theorem
the fraction of the total variation that is due to the additive effects of genes