Chapter 13 PP Flashcards
Primary classification group with most closely related members
species
What concept describes a group of individuals that can interbreed and produce fertile offspring
the biological species concept
sum total of the alleles found in all individuals of a species
gene pool
changes in the frequency of an allele in a gene pool can only occur with a biological species
true
the spread of an allele throughout a species’ gene pool
gene flow
if organisms are evolving,
they are changing
____ is how unique genes are created
mutation
wha tis a change to the DNA sequence?
mutation
prevention of gene flow between species Is called ______ _____.
reproductive isolation
movement to new location far from the main population
migration
evolution of several, diversified new species from one founding species is ______ _______.
adaptive radiation
isolated from each other by distance or a geographic barrier
allopatric populations
live near each other in the same geographic region
sympatric population
process of chromosome duplication
polyploidy
polyploid organism is genetically isolated form both parents
instantaneous speciation
Human races are not independent evolutionary groups
true
No single allele is found in all populations of a defined race and not found in other races
true
SNP’s are never found in all populations of the same race and never within every individual in a population.
true
change in allele frequency that occurs due to chance
genetic drift
genetic differences resulting form a small sample
founder effect
genetic change resulting from a dramatic reduction of population numbers
population bottleneck
small populations are especially prone to loss of alleles through chance
chance events
