Natural Selection
Wild Card
Sources of Evolution
Evolutionary Evidence
Types of Selection
100
Who was the scientist who deemed natural selection as the mechanism of evolution?
Charles Darwin
100
True or False: Asexual Reproduction is a source of genetic variation
False
100
True or False: Individual organisms evolve over a lifetime.
False- populations evolve
100
What is the BEST evidence for evolution?
Homology: similarities between genes and proteins
100
This type of selection happens when environmental changes favor one phenotype over another
Directional Selection
200
What part of the Galapagos finch did Darwin observe and study?
Beaks
200
A mountain range separates two populations of deer from mating. What type of isolation is this?
Geographical Isolation
200
The ultimate source of variation in a population
Mutation
200
What type of structures are exhibited by the figure?
Homologous Structures
200
The consistent size of babies at birth is an example of which type of selection?
Stabilizing Selection
300
This term refers to how well an organism is suited for its environment, its ability to survive and reproduce, and the adaptation of characteristics important for survival.
Survival of the Fittest
300
A diagram that reflects evolutionary relationships
Evolutionary Tree
300
When the allele frequency of a population can change if members of an existing population leave, or new members join
Migration
300
There are 5 pieces of evidence for evolution.
1. Direct Observations
2. Similarities in Embryology
3. Geographical Distribution
4. Homologous Structures
What is the 5th one?
Fossil Records
300
What type of selection does this picture represent?
Stabilizing Selection
400
What is the fitness score of a mule?
Zero
400
This type of evolution is defined as independent evolution of similar features in different lineages
Convergent Evolution
400
You accidently step on a population of beetles, and randomly kill all of the brown ones. This changes the allele frequency within the population. This is an example of?
Genetic Drift (Bottleneck Effect)
400
Why is embryology evidence for evolution?
The way organisms develop lead to homologous structures.
400
When humans breed dogs to favor specific characteristics, this is an example of what?
Artificial Selection
500
Darwin based his theory of natural selection as the driving force for evolution from these 4 observations
Reproduction, Variation, Heredity, and Fitness
500
Which of these is not a characteristic of a chordate when looking at embryology?
Notochord, Vertebrae, Postanal Tail, or Pharyngeal Pouches
Vertebrae
500
If a trait is polygenic, how many alleles does it have?
More than two
500
What best describes the structure indicated by the letter C?
Vestigial Structure
500
What type of selection does this picture represent?
Disruptive Selection