Evolution
This term means "change over time"
Evolution
A process by which traits that improve an organism's chances for survival and reproduction are passed on more frequently to future generations than those that do not.
What is Natural Selection
A process of selection conducted under human direction is known as?
Artificial Selection
This term describes a widespread and rapid decrease in the amount of life on earth.
This mass extinction happened 440 million years ago, here organisms such as corals and shelled brachiopod filled the worlds oceans. A climatic shift caused sea temperatures to change and the majority of life in the ocean died. What mass extinction was this?
Ordovician-Silurian Extinction
This is a sequence of DNA that codes for a particular trait
Gene
In 1858, two scientist each independently proposed the concept of natural selection as a mechanism of evolution. Name one of those scientist.
Charles Darwin and Alfred Russel Wallace
What is some evidence for artificial selection?
Selective breeding of domesticated animals or crops.
True or False: Extinction occurs at an even rate
False: it occurs at an uneven rate
This mass extinction occurred 365 million years ago, often referred to as the "age of fish," this era saw the rise and fall of many prehistoric marine species. The cause of organisms going extinct were "dead zones" being created and suffocating marine life. This era was known as?
Late Devonian Extinction
This term describes a change in DNA
Mutation
Natural Selection explains the relationship between an organism and its ____________.
environment
Our entire agriculture system is based on artificial selection, what is an example of that?
We have created corn with larger, sweeter kernels.
The Bramble Cay Melomys, was a small rodent native to Bramble Cay. This creatures habitat was destroyed to rising sea levels and eventually led to its extinction. The rising sea levels were exacerbated by ?
Climate Change
This extinction happened 253 millions years ago. Often referred as the "great dying," a period of rampant volcanism caused 90% of all planet's species and decimated reptiles, insects, and amphibians that roamed the land. This is known as?
Permian-Triassic Extinction
This term describes a biologic evolution that occurred by chance.
Genetic Drift
Natural Selection follows three conditions, list two:
Organisms produce more offspring than can survive
Individuals of a species vary in their characteristics
Individuals vary in their fitness
What is the difference between artificial selection and natural selection?
In artificial selection, human decide which traits are desirable and select for them. In natural selection, traits that increase an organism's fitness for their environment are selected for.
This term describes the overharvesting of species for commercial, recreational, or subsistence purposes can lead to population declines and extinctions.
Overexploitation
This happened 201 million years ago, many marine and land species became extinct; these included large prehistoric crocodiles and some flying pterosaurs. This was the?
Triassic-Jurassic Extinction
There are four primary mechanisms, or processes, of biological evolution, list two:
Mutation, Migration, Genetic Drift, Natural Selection
Condition 3, states that "Individuals vary in their fitness," what does the term fitness mean?
Describes how reproductively successful an organism is in its environment.
This term describes the process by which new species are generated
Speciation
We learned about 5 main causes of extinction, list two:
Habitat Destruction
Pollution
Climate Change
Overexploitation
Disease
This happened 66 million years ago, known as the day the dinosaurs died. An asteroid over 8 miles wide hit Earth on what is today, Yucatan, Mexico. This period of extinction is known as?
K-Pg Extinction