evolution
Latin for “to unfold or unroll” to reveal
- to simply change
- change in everything*
Decent with modification is….
Darwins definition of evolution
What are the two major themes of evolution?
process and history
What is the theme of process?
microevolution
define microevolution
- how the process occurs
- evolutionary changes on a small scale - change in allele frequency within a population
- evolution happening right now!
What is the theme of history?
macroevolution
define macroevolution
- process created history with many unique events
- evolution on the grand scale - refers to above species level
modern synthesis says
microevolution explains macroevolution
What is modern synthesis?
- a movement that married evolution and natural selection to genetics systematics and paleontology
define genetics
the study of how traits are passed from parent to offspring
define genotype
combination of genes an organism has
define phenotype
the physical appearance and characteristics
define locus
site on a chromosome
define allele
a particular form of a gene
particulate theory
- darwin did not have
- traits can be passed on from generation to generation through discrete particles
- after mendles work
- change in allele frequency
define dominant
always expressed
define recessive
masked by dominant unless both present
define frequency
rate at which something happens
- always a decimal - adds to 1
- not a percent
gametes are
haploids
gene pool
total # of genes within a population
Allele frequency
of copies of an allele / total # of all alleles of that gene in a pop
Hardy Weinberg equilibrium is the basis of
population genetics
h-w was formulated in
1908
h-w relates
allele and genotype frequencies in a pop
