Mechanisms of Evolution
What is evolution?
The changes in allele frequencies in a population over generations
Are humans, bats and whale forelimbs examples of homologous structures.
Yes
What is speciation
The process of a new species being made
who was G.H hardy
mathematician
What is Gene Flow
The movement of alleles between populations through migration
Why does the founder effect occurs
it occurs when a few individuals become isolated from a larger population
What are the four types of Evolutionary Evidence
does Postzygotic Barrie's happen before or after fertilization hybridization
After
is there any relationship between allele frequencies and genotype frequencies
yes a mathematical relationship
what is genetic drift ?
A random change in allele frequency within a population
In genetic drift does it affect a larger or smaller population
smaller population
define vestigial structures
Body parts that have lost their original function
How does speciation led to new species
By adapting to their environment in different way
how can we use the hardy -weinberg equilibrium
to calculate if evolutionary forces are acting on a population
Which process happens by random chance?
genetic drift
What is the difference of Gene vs Allele
Gene is a Segment of DNA that's codes for a trait like a recipe
Allele is a variant form of that Gene like a flavor of that recipe
During Embryology does early development stages of different species look similar
true
How do environmental factors influence the evolution of two groups?
different environment creates different adaptation
what does the Hardy Weinberg equilibrium allow us to do
How does gene flow affect genetic diversity within a population?
increases the genetic diversity by bringing new alleles from other populations
What are the five mechanisms of evolution
Natural selection, Gene Flow , Genetic Drift , Mutations , Non-random mating
what species are the same with humans
Chimpanzees
What is sympatric speciation
same location but no physical barrier
why is it important
a hypothesis for population genetics on why population evolves
Why do scientists say gene flow can prevent populations from becoming too different from each other?
gene flow mixes alleles between populations