Fitness and selection
Being able to survive and reproduce
What is fitness?
This occurs because traits are often heritable and organisms compete to survive
What is natural selection?
When alleles are transferred between populations due to immigration
What is gene flow?
This is what the primitive atmosphere mostly consisted of
What is water vapor, nitrogen, and carbon dioxide?
Give and example of an organism that is more fit
(teacher discretion)
The members of a population differ from one another
What is variation?
When a cataclysm occurs the remaining allele frequencies are different than they were before the event
What is bottleneck effect?
Organisms that survived in Earth's original environment.
What is archaebacteria?
An environmental factor that impacts whether an organism can survive and reproduce. ______________ pressure
What is selective pressure?
The difference between artificial and natural selection
What is human choice?
When environments are similar they lead to the development of similar traits in two different lineages and the traits are called this
What is convergent evolution and analogous traits?
Life on Earth came from meteorites from outer space
What is panspermia?
When the extremes of a trait are both equally selected for, this occurs
What is stabilizing selection?
When multiple niches are available and organisms evolve separately to fill those niches to avoid competition
What is adaptive radiation?
These structures exist between organisms who share those types of ancestors
What are homologous traits and common ancestors?
Gases such as methane, ammonia, hydrogen, and water react together to produce these small organic molecules
What is amino acid?
Give an example of directional selection
an example of a species that shifts in one direction
The two equations of HW equilibrium involve these terms and each of them mean . . .
What is p for dominant allele frequency, q for recessive alle frequency, p2 for homozygous dominant frequency, 2pq for heterozygous frequency, and q2 for homozygous recessive frequency?
This is a number determined by the number of living offspring of one organism compared to the average number of living offspring for that population
What is evolutionary fittness?
Mitochondria were once their own prokaryotic cells.
What is the Endosymbiotic Theory?