Show:
Genetic Drift
Evolution II
Randommess
Evolution
Species
100
Define genetic drift?
What is when a small group leaves a big group, changing gene pool.
100
differences in traits ( leg length, fur thickness, color, etc) i
What is variation
100
evolution in a small way, one gene has changed over 30 years, dark moth vs light moths
What is microevolution
100
Trait that helps an organism better survive
What is an adaptation
100
a population that only breeds with each other
What is a species
200
small group of lizards survives a earthquake and the new gene pool is different.
What is bottle next effect
200
competition for food, water, shelter ,and resources
What is Struggle for Existence
200
Amount of different kinds of living things
What is biodiversity
200
Process where organisms with favorable genetic variations survive and reproduce more than others.
What is natural selection
200
general term that describes the situation where members on one species are isolated from each other and no longer interbreed
What is reproductive isolation/ prezygotic barriers
300
Small group of118 canary birds are taken from Spain to Peru. The gene pool is different.
What is Founders effect.
300
The more ______________ in a population, the more likely it will survive a change in the environment.
What is variation, diversity.
300
Where an organism lives
What is a habitat
300
process that produces genetic variation
What is mutation
300
A groups of ravens begin to have two different calls during the breeding season, creating two different species.
What is behavioral isolation
400
Although it seems like the new gene pool is reflecting natural selection, it's not. Its _________________.
What random, good luck
400
mRNA --> amino acid chain (protein)
What is translation
400
Amount of energy passed on to the next trophic level
What is 10%
400
the ability to survive and reproduce in your environment
What is fitness
400
one group of gophers start to breed at two different times, creating two species.
What is temporal isolation
500
A man is walking along and steps on some bugs, green and brown colored. Most of the green bugs are crushed and die. Is this Natural Selection or Genetic drift? explain
What is genetic drift, they died due to bad luck, not due to lack of fitness for the environment.
500
3 different sources of variation
What is mutation, meiosis, crossing over, gene shuffling, independent assortment
500
Bacteria and fungi are
What is decomposers
500
What natural selection acts on
What is phenotype
500
A population of flying squirrels live on opposite sides of a huge canyon, that they are unable to cross or fly across, thus creating two different species of squirrels .
What is geographic isolation