Cow
What is adaptive radiation (divergent evolution)?
Process in which a single ancestral species diversifies into multiple new species.
What is an advantage of giving organisms scientific names?
It avoids confusion of the same species having different common names in different places.
How have humans evolved over time?
Small teeth, Flat facial structure, Small Jaw, Large brains
How are Bacteria and Archaea alike? How are they different?
Alike: they are both prokaryotes. Archaea live in extreme environments and
bacteria do not.
Evolution:
Change of living organisms over time.
What is convergent evolution?
The independent evolution of similar features in species of different lineages.
What do homologous structures suggest about organisms and their lineage?
- That they shared a common ancestor
What piece of evidence showing different species being related would be most
supportive?
Molecular biology
How were the first modern humans different from other hominid species before them?
Were able to think in symbols and associate them with different things
What organism was the first to produce oxygen on Earth?
Cyanobacteria
What causes variation among members of a species?
Mutations arising in the genetic code
What happens when overpopulation occurs?
Can lead to the environment not being able to support all members of a population. Can lead to competition for resources/ mating
What process occurs in meiosis that leads to more genetic diversity?
Crossingover
What is the miller urey experiment and what did it find?
Miller Urey experiment tried to replicate early earth conditions. They found that
inorganic compounds + lightening (electrical charger) can produce organic compounds (amino acids).
Describe characteristics of a protista?
No cell wall, use flagella for movement.
Natural Selection:
The process where organisms better adapted to their environment tend to
survive and reproduce. (survival of the fittest).
How is competition related to natural selection?
Competition lead to the strongest individuals surviving and reproducing.
What were the very first organisms to arise on Earth?
Unicellular Prokaryotes
What is an effect of genetic drift?
Reduces variation
Genetic Variation:
The diversity in gene frequencies within a population
Adaptations:
Allow organisms to better survive and reproduce in its environment