Evolution 1
Evolution 2
Evolution 3
Evolution 4
Evolution 5
100
A process by which favorable traits tend to increase in frequency over time is called
What is natural selection?
100
Embryological evidence provides physical evidence of a common ____________.
What is an Ancestor?
100
Why is not finishing all of your prescribed antibiotics bad?
Some potentially resistant bacteria will remain and could begin to grow again, cause a worse infection. Finishing all of an antibiotic should kill the nonresistant bacteria so that the body can more effectively fight off the resistant bacteria
100
When individuals at only one end of a bell-shaped curve of phenotype frequencies have high fitness, the result is ___________ selection
directional selection
100
Similar species mate at different times
temporal isolation
200
Differing traits in the same species
What is variation?
200
The similarity in homologous structures between different species is evidence that they
share a common ancestor
200
Structures thought to be without purpose or function such as auricular muscles and pelvic bones in snakes and whales.
Vestigial structures
200
How does DNA show evidence of relationships between organisms?
Similarity between genetic sequences can show common ancestry between organisms by the number of similar base pairs.
200
An adaptation is an inherited characteristic that can be __________ _____________. (think echolocation)
physical or behavioral
300
What is an inherited trait that increases an organism's chance of surviving and reproducing?
What is adaptation?
300
Natural selection acts on traits in a group of organisms of the same species or a __________________.
What is population?
300
Diagram showing evolutionary relationships between organisms
Evolutionary tree or cladogram
300
The separation of populations by barriers such as rivers, mountains, or bodies of water is called
behavioral or geographic isolation
300
Proposed the theory of evolution by natural selection but called it descent with modification at the time
Charles Darwin
400
What type of distribution of phenotypes is described and shown in the graph?
What is stabilizing selection?
400
Two similar species have different reproductive structures, gametes or size
mechanical isolation
400
Darwin’s concept of evolution was NOT influenced by which line of evidence?
What is DNA?
400
The most important factor that is necessary for the formation of a new species is
reproductive isolation
400
What is overproduction?
More offspring are produced than can possibly survive
500
Same function different structure
What is Analogous?
500
Explain why selection can cause populations of organisms to change
It allows some organisms to survive and produce offspring while others do not.
500
The Galápagos finch species descending from one common ancestor & being split by islands are an excellent example of
What is speciation by behavioral isolation?
500
According to Darwin’s theory of natural selection, the individuals that tend to survive are those that have
traits better adapted to their environment (fitness)
500
The ultimate source of genetic variation
Genetic mutations