lecture 1 Flashcards
define evolution
populations evolving through time
change through time
differentiate between theory and laws
theory’s describe laws explain
what is meant by special creation
organisms created by God
what did plato say
typological thinking
who discovered scale of nature and what was it about
aristotle and it basically explains that organisms are in a linear form and the less complex organisms like minerals are at the bottom and more complex ones are at the top eg human
what was lamarck theory
change through time+ scale of nature
why are acquired traits not passed r to the offspring
acquired traits are developed by environmental influence so they are not passed to the next generation because they aren’t heritable
explain evolution by natural selection
individuals under selection, population is evolving
what is descent with modification and who brought up this idea
Origin of species- darwin
Descent with modification- species change through time
and species related by common ancestry
explain evidences of change through time with examples
evidence of extinction
transitional forms
fossil records
vestigial traits
vastness of geologic time
what was the earliest form of life detected
cyanobacteria
explain eveidence of descent from a common ancestor with examples
homology
new species descending from pre existing species
living in the same geographic area
what is genetic homology
similarity in DNA RNA or amino acid sequences due to inheritance from a common ancestor
what is developmental homology
similarity in developmental processes due to inheritance from a common ancestor
what is a population
a group of the same species living in the same geographic area at the same time