The species of finches that Charles Darwin found on the Galapagos Islands displayed different structural adaptations. One of the adaptations that Darwin noticed was:
the different structure/length beaks
100
These are the structures that perform different functions but have similar structure because they are derived from same ancestors.
homologous structures
100
A population of ants decline to a very low number. When the ants’ habitat is turned into a picnic area for humans, the additional food causes the population of ants to rebound. This is an example of this type of genetic drift
What is bottleneck
100
Which one of the following is NOT a mechanism of evolution?
a. Genetic drift c. Selective mating
b. Random mating d. Mutations
random mating
200
this best fits the representation of time from largest to smallest on the timeline
Eons-Era-Periods-Epochs
200
this layer of the rocks will have the newest fossils
top most layer
200
The structures that superficially look alike and perform same function but are derived from different ancestors
Analogous structures
200
this type of prezygotic isolation occurs,when a mountain range separates a species
geographic isolation
200
Over many years, a population of moths changed from a light color to a darker color as pollution caused the trees to turn dark. Scientists think that the darker moths were less visible to birds than the lighter moths were. Due to this the darker moths were less likely to be eaten. This is an example of:
Directional selection
300
this is the method used to determine the age of the rocks by comparing them with those in the other layers
Relative dating
300
Environment change usually coincides with this in the fossil record?
mass extinction
300
Different species that have similar gill slits in development is an example of this type of evidence
embryonic evidence
300
A small population of seagulls migrated from the mainland to an island where the environment was more tropical. After several generations, the allele frequencies of the seagulls began to change. This process of change in allele frequencies due to migration of a small group is known as:
Founder effect
300
When humans determine which male and female of a species reproduce, this is called
artificial selection
400
one of these is NOT a fossil
a. Trace Fossil c. c.Volcanic rock
b. Replacement d. Amber
volcanic rock
400
The technique used on fossils to most accurately date them is:
Radioactive dating
400
A human’s appendix and tail bone are examples of:
vestigial structures
400
This can occur as a result of geological isolation
speciation
400
When a fossil is discovered and it shows characteristics of previous ancestors, but characteristics of current organisms, this is called a
transitional fossil
500
These organisms were the source of the original oxygen-enriched atmosphere of early Earth
autotrophic prokaryotes
500
Natural variations in traits that best suit an organism for survival and reproduction are selected. These traits that are beneficial for survival are known as:
adaptations
500
A species looks like another species that is poisonous is an example of
mimicry
500
when two birds have different mating song, this is an example of
prezygotic isolation
500
Genetic variation in species increases the chances that a species will survive a drastic environmental change. Variation can occur in a species when there is a new combination of genes through reproduction or .