Definitions
Variety of life at all levels within a region or across the planet
Biodiversity
Asteroid hit earth and...
wiped out 75% of all species and all non-avian dinosaurs.
What ship did Darwin sail on?
HMS Beagle
When animals are naturally killed off due to not being able to outcompete others in their environment
Natural Selection
Anatomical structures that have lost their original structure through evolution.
Vestigial Structure
A group of organisms of the same species living in the same are and interacting with one another
Population
What did the primordial soup lead to?
Abiogenesis
Proposed that traits are acquired and then inherited.
Jean Baptiste Lamarck
Name the three types of Natural Selection
Stabilizing, Disruptive, Directional
Biological structures with similar functions, but different evolutionary origins
Analogous Structures
The process by which animals, plants, and other living organisms are transformed into different forms by the accumulation of changes over successive generations.
Evolution
Why do whales have pelvic bones? What does this suggest?
Whales have small, internal pelvic bones that no longer serve their original function of supporting legs.
He was researching and developing a theory of evolution at the same time as Darwin.
Alfred Russel Wallace
What selection type leads often leads to Speciation
Disruptive Selection
Anatomical structures that are similar due to shared evolutionary origins
Homologous Structures
What does anoxic mean?
There was no oxygen
What is radiocarbon dating?
Radiocarbon dating is carried out by measuring how much of the carbon-14 and nitrogen-14 isotopes are found in a material. The ratio between the two is used to estimate the material's age
Refers to the passing of traits from parents to offspring
Principle of Inheritance
Why are human babies an example of stabilizing selection?
Babies that are too big have a higher risk of birthing complications for themselves and the mother. Babies that are too small are prone to a great array of maladies.
Name the three kinds of Comparative Anatomy
Homologous
Analogous
Vestigial
Oxygen gas began to accumulate in the atmosphere
The great oxidation event
What are the 6 steps of natural selection?
Variation, Overproduction, Competition, Heritability, Adaptation, Speciation
Name all four Points of Darwin's Theory
Principle of Variation, Principle of Inheritance, Principle of Selection, Principle of Time
Who is at a disadvantage in disruptive selection?
Both extremes are favoured, while the ‘average’ has a disadvantage
Name the four types of Evidence for Evolution
Comparative Anatomy, Comparative Embryology, Molecular Biology, Biogeography