Natural Selection
Natural Selection
Evolution
Evolution
The Brain and primate evolution
100
What is natural selection?
Species that are best adapted to their environment are able to reproduce
100
True or false : populations evolve, not individuals.
True
100
What causes evolution?
Natural selection over generations
100
what is evolution?
When a population changes over time to better suit their environment
100
The four sections of the Cerebrum
frontal lobe, parietal lobe, occipital lobe, frontal lobe
200
In an arctic habitat; are white foxes or grey foxes more likely to survive and why?
White foxes are more likely to survive becase their white coats help them blend into the snow
200
If a Red beetle from a red beetle colony were to move to a colony of brown beetles what would this be known as?
gene flow
200
What are the 6 evidences for evolution
comparative embryology, comparative anatomy, similar nucleotide sequences, observed evolutionary change, fossil records, biogeography clues
200
How are fossils used as proof of evolution?
Show how species change over time (oldest buried deepest, most recent near the surface)
200
The three parts of the brain
brain stem, cerebellum, cerebrum
300
What adaptation do polar bears have and how does it help them?
Polar bears have thick white fur which keeps them warm and allows them to hide from their prey
300
Explain which mouse is better adapted to this environment.
The grey mouse is better adapted to this environment. Its fur color blends in with the environment and therefore is not seen by predators.
300
What does common ancestry mean?
Species that are related shared a common ancestor
300
How is Anatomy used as proof of evolution?
Species that share a common ancestor have body structures that are similar because the common ancestor had those structures
300
The early hominid fossil record of the Robust australopithecine shows many adaptive characteristics. The development of language and the manufacturing of tools can be linked to the structural changes found in the fossil record
Which structural characteristics are most likely related to the development of language and the manufacturing of tools?
larger skull and brain size
400
What are the 3 things needed for natural selection to happen?
variation, heredity, reproductive advantage
400
What causes variation in a population?
genetic mutations
400
When two species or populations evolve to become more similar to each other.
convergent evolution
400
How is embryology proof of evolution?
Many organisms of different species look similar during early stages of development.
400
on primates skulls evolved over time to have inset teeth as a result of what prominent skull change
smaller jaw bones
500
Theodosius Dobzhansky discovered that successful species tend to have a wide variety of genes that do not appear to be useful to the species in its present environment. What did this discovery help explain about genetics and the changes that occur in a species over time?
Species with greater genetic diversity adapt more easily to changing environments.
500
A small portion of the population that is geographically isolated from the rest of the population runs the risk of decreased genetic variation. This an example of _____ _____
genetic drift
500
was is the timeline of primate evolution
promisians --- > Anthropoids ---- > Homonoids ----> Hominids ----- > Hominins
500
How are DNA and amino acids used as proof of evolution?
Comparing DNA or amino acids of species shows us who is related. The more similar the DNA is, the more recently they shared a common ancestor
500
was is the timeline of primate evolution
promisians --- > Anthropoids ---- > Homonoids ----> Hominids ----- > Hominins