Key Concepts 1
Key Concepts 2
Key Vocab
Humans
Whales and Dolphins
100
Which scientist proposed the theory of natural selection?
Charles Darwin
100
The process that occurs when organisms with favorable traits survive and reproduce more successfully is called _______.
Natural Selection
100
Define Evolution
The process of change in the heritable traits of biological populations over successive generations.
200
The idea that all life shares a common ancestor is know as?
Common Descent
200
Define Genetic Drift
Random fluctuations in the frequencies of alleles from generation to generation, often impacting small populations significantly.
200
True or False
Humans directly evolved from apes.
False, they share a common ancestor that lived 6 to 8 million years ago, we evolved along a separate lineage from a common ape-like ancestor.
200
What animal did whales/dolphins evolve from?
a) Snake
b)The megalodon
c)4 legged mammals
d) The pirahna
c) 4 legged mammals gradually made the shift to relying on the water for protection, food and eventually full time habitat.
300
Which type of genetic drift is when a population is experiencing a drastic reduction in size due to a natural disaster?
Bottleneck effect
300
Define Gene Flow
The transfer of genetic material (alleles) from one population to another through migration or interbreeding.
400
What are the four main evolutionary drivers for evolution?
Mutation, Genetic Drift, Gene Flow and Natural Selection
400
Define Coevolution
The process where two or more species reciprocally affect each other's evolution, often seen in predator-prey or plant-pollinator relationships.
400
How many ancestors does the average human have?
a) 46 million
b) 100 Million
c) 12 Billion
b) 100 Million unique ancestors
500
Define Homologous Structures
Body parts that share a common evolutionary origin and underlying structure, even if they serve different functions.