Lesson 10 Definitions Flashcards
Hardy Weinberg Equation
(p + q)^2 = 1
recessive allele
q
Lamarckism
the notion that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime.
catastrophism
the theory that changes in the earth’s crust during geological history have resulted chiefly from sudden violent and unusual events.
uniformitarianism
the theory that changes in the earth’s crust during geological history have resulted from the action of continuous and uniform processes.
natural selection
the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
three-domain system
Bacteria, Archaea, and eucaryota
hybrid vigor
new gene combinations coming together
analogy
similar functions, no common ancestor
homology
similar function/location, common ancestor
orthologs
similar sequences or genes from different species (evidence they have a common ancestor)
paralogs
two copies of a gene from the same genome
vestigial structures
structures which have seemingly lost all or most of their function
genetic drift
changes in allele frequencies in a population over time
gene flow
transfer of alleles from one population to another
