Vocabulary
Types of Evolution
Evidence Of Evolution
Natural Selection
EOC Boss Level
100
A process by which favorable traits tend to increase in frequency over time is called
What is natural selection?
100
This is changes in a population's gene pool over time
What is evolution
100
These structures resemble each other due to similarity in function but lack similar structure.
What is Analogous structures?
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
According to fossil records, the horses that lived 50 million years ago were much smaller, weaker and slower than modern horses. Which process is most likely responsible for the changes that have led to the increased size, strength, and speed in horses?
What is Natural Selection
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
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)
200
The diagram illustrates an embryonic stage of two organisms.
Which of the following can be determined by observing the embryos shown in the diagram?
The organisms share a common ancestry.
300
This is a heritable trait that increases an individuals fitness
What is an adaptation?
300
This type of evolution results in random changes in DNA becoming ultimate sources of new alleles
What is a mutation?
300
Diagram showing evolutionary relationships between organisms
Evolutionary tree or cladogram
300
(daily double)What type of distribution of phenotypes is described and shown in the graph?
What is stabilizing selection?
300
How would you explain the link between jaw size and hominid evolution? (daily double)
As the hominid evolved the jaws got smaller and less protruding
400
More offspring are produced than can possibly survive
What is overproduction?
400
This type of evolutionary theory says that evolution happens steadily in tiny changes over long periods of time leading to species formation
What is gradualism
400
The scientific theory of evolution is supported by different types of evidence. The diagrams below show the skeletons of two different animal species. How does comparing the skeletons of these animals provide support for the scientific theory of evolution?
It shows possible common ancestry between organisms.
400
A small population of chimpanzees lives in a habitat that undergoes no changes for a long period. How will genetic drift probably affect this population in terms of diversity?
What is reduce genetic diversity?
400
When faced with a change in enviornmental condition, a population of a species will do three things
What is MAD (migrate, adapt or die)
500
This theory agrees with fossil records that show no intermediate forms for long period of time, in other words, periods of rapid change are separated by periods of little or no change
What is punctuated equilibrium
500
(Daily double) These are the four mechanisms of evolution
What is genetic drift, gene flow (migration), mutation, natural selection
500
Which of the following evidence of evolution provides the best scientific evidence that chimpanzees and rhesus monkeys come from a common ancestor?
DNA sequence (Protein Sequence or genetic sequence)
500
Mutations within a DNA sequence would best be described by which option
-increase genetic diversity
-alter phenotypes
-harmful variations
-lead to genetic superiority
What is increase genetic diversity?
500
Which statement can be inferred from the evolutionary tree?
Species 5 is most closely related to species 6