Genes & Variation
Traits
Genetic Change
Speciation
Miscellaneous
100
Group of individuals of the same species that live in the same area and interbreed
population
100
outward physical appearance of an organism is it's:
phenotype
100
A genetically controlled trait that increases an organisms fitness
adaptation
100
a group of organisms that breed with each other and produce fertile offspring
species
100
What is Luke's middle name?
Emmanuel
200
All of the genes/alleles in a population
gene pool
200
A single gene is controlled by ______ alleles.
two
200
Type of selection that has better fitness at one END of the bell curve, selection against one of the extremes
directional selection
200
Type of isolation where they can interbreed, but don't because of different courtship rituals
behavioral isolation
200
Type of genetic drift that happened to the endangered cheetah population:
bottleneck effect
300
Any change in the relative frequencies of alleles in a population over time.
evolution
300
The range of phenotypes in a polygenic trait form a:
bell curve
300
Type of selection where individuals in the center of the curve have the highest fitness, selection against the extreme phenotypes
stabilizing selection
300
Type of reproductive isolation where physical barriers prevent organisms from interbreeding
geographical isolation
300
Change in allele frequencies as a result of migration (think Amish dwarf)
founder effect
400
any change in DNA base sequence
mutation
400
In the 1930's scientists finally connected ______ to Darwin.
Gregor Mendel
400
Type of selection that has higher fitness at extremes, selection against the average phenotype.
disruptive selection
400
Type of isolation where organisms breed/pollinate at different times of year
temporal isolation
400
Couple that studied and observed beak finches on the Galapagos islands for many years
Peter & Rosemary Grant
500
Gene shuffling that occurs during meiosis is called:
genetic recombination (independent assortment, crossing over)
500
occurs when genes are passed directly from one organism (bacteria) to another [not inherited!]
lateral gene transfer
500
Term for random changes in allele frequencies within a small population (not caused by natural selection).
genetic drift
500
Term for when allele frequencies remain constant and there is NO evolution occurring.
genetic equilibrium
500
Name the 5 things Hardy & Weinberg said must be true for NO evolution to take place:
large population, random mating, no imm/emgration, no mutations, no natural selection
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