Chapter 1 Flashcards
Homology
Structural characters that are similar due to a shared common ancestry
Convergent evolution
Independent origin of similar traits in separate evolutionary lineages
Synapomorphies
Derived form of a trait that is shared by a group of related species
Mutations
Any change to the genomic sequence of an organism
Reassortment
Ability of viruses to swap genes
Genetic drift
Evolution arising from random changes in the genetic composition of a population from one generation to the next
Phenotype
Physical appearance; morphology, physiology, behavior
Misconception #1
It’s just a theory- a theory is used to describe something with a lot of supporting evidence
Misconception #2
Biologists have a complete explanation to everything - we know so little about live organisms and have limited fossils
Misconception #3
Natural selection is evolution - natural selection is a mechanism of evolution
Misconception #4
Evolution is the result of individuals adapting to their environment - populations not individuals
Misconception #5
Evolution happens for the good of the species - evolution does not recognize what’s best, does what’s best for reproduction