evidence
what is the problem with fossil evidence?
no consistent timelines, all have a large gap in them.
What is a vestigial structure?
A part of the body that no longer has a use, as the organism has evolved out of using it. Had a use before.
what is the bottleneck effect?
Large population is killed off, leaving small percentage that continues
What is an example of a behavioral adaptation?
define "fossil"
Preserved remains/impressions of a deceased animal found in the Earth
what is dna sequencing evidence?
Different species have same DNA nucleotides, and same synthesis process. Have slight amino acid differences, but are still very similar there
What is a homologous structure?
similar structures + function in organisms with similar roots
what is the founder effect?
Small amount of population is isolated and continues.
what is an example of mental adaptation?
a species instinctively knowing not to eat poisonous things despite having no experience with those.
define "camouflage"
a defense mechanism to allow an organism to blend into their environment.
what is embryological evidence?
similarities in the embryos of unrelated organisms.
What is an analogous structure?
similar structures + functions in species with different roots
what is gene flow
Individuals immigrating out of population to create a different species
define the general term of "adaptation"
evolution of an organism to fit into their environments and overcome change, something like this.
define "genetic equilibrium" and what it means for evolution
allelic frequency of a species staying the same for multiple generations, meaning that the species has stopped evolving (for now)
what other evidence is there other than embryological, DNA sequencing, and fossil evidence?
anatomical evidence
what is the difference between analogous and homologous structure?
analogous: different roots
homologous: similar roots
what is genetic drift?
Dramatic change in allelic freq. through chance events (environment, randomly)
what is the difference between camouflage and mimicry?
camo: blending into environment
mimicry: copying some other creature
define "gene pool"
all alleles in a population
what are the three types of anatomical evidence?
vestigial, analogous, homologous
what kind of relation does a bat wing, insect wing, and bird wing have?
analagous
what are the 4 steps of natural selection?
Variation exists
Some are more advantageous for survival and reproduction than others
Organisms that survive produce more offspring that can also survive with same factors
Offspring of survivors make up large percentage, leading to more survival.
list 3 adaptations you would want if you were a bird living in a forest
anything bro
define "adaptive radiation"
Diversification of species due to new resources being available.