VERIFIED CORRECT ANSWERS GRADED A+
evolution
gradual change of characteristics in ppopolation
natural selection
evolution is driven by this
modern synthesis
evolution is a gradual process
mutation
change in the DNA sequence of a gene, resulting in a change of the trait
genetic drift
effect evolution - change over time due to fluctuations
Hardy Weinberg Law of Equilibrium
shows why recessive genes do not dissapear over time
p2 + 2pq+ q2=1
gene migration
introduction of new genes from the immigrants results in change of the gene pool
Hardy Weinberg Law
important b/c it show that alleles have no selective value will be retained in a population
over time
two mechanisms that produce separate species
, allopatric and sympatric speciation
allopatric speciation
when two populations are geographically isolated from each other
sympatric speciation
genetically different members reproduce with each other producing a population which
is seperate from the original species
adaptive radiation
overtime species will adapt to live more effectively in the new environment
punctuated equilibrium
adaptations to species arise suddenly and rapidly
oparin hypothesis
origin of life hypothesis - abundance of ammonia, hydrogen, etc escaping from
volcanoes
evolution of the first cell
hypothesis by: Oparin, Stanley Miller, Sidney Fox, Cyril Ponnamperuma
plant evolution
considered to have begun with heterotrophic prokaryotic cells
earliest plants
were aquatic
animal evolution
thought to have begun with marine protists
Cambrian explosion
sudden appearance of multitudes of differentiated animal forms