Evolution 1
The process in which a species has changed over time.
What is evolution?
He is known as the Father of Evolution
Who is Charles Darwin?
The Island where Charles Darwin explored...
Galapagos
This type of selection occurs when the two extremes are favored (selected for) in an environment.
What is disruptive selection?
The oldest fossils are found in what rock layers?
What is the bottom layer/deeper layers?
Similar structures that evolved from a common ancestor such as bones humans, cats, bats, and whales have in common.
What are Homologous Structures?
Homologous structures show that organisms evolved from
What is a common ancestor?
Any inherited trait that increases an organism's chance of survival is known as this.
What is an adaptation?
What molecular structure can be used to show how closely related different species are?
What is DNA?
An organisms ability to survive and be able to pass on its traits based on the environment. (ability to camouflage, escape predators, attract mates)
What is Fitness?
Preserved remains of ancient organisms
What are fossils?
When chance or random events change the allele frequencies of a population.
What is genetic drift?
The concept that organisms who are the best suited to their environment will be the most successful
What is survival of the fittest?
Well supported explanation of the natural world; such as evolution.
What is a theory?
A mistake or change that occurs in the DNA sequence is called a ______________________.
What is a mutation?
All the different types of alleles found in a defined population.
Gene pool
The concept of humans selecting desired traits in species
What is artificial selection or selective breeding?
According to the modern theory of evolution, new variations are produced by....
What are mutations?
Why did the population of pepper moths change?
industrial revolution, smoke, trees turning black, the mutated black moths were able to survive and reproduce better and their population grew.
Type of reproductive isolation that occurs when members of the same species are separated by mountains.
What is geographical isolation?
Which term refers to the process by which individuals that are better suited to the environment survive and reproduce therefore passing down their genes to their offspring?
What is Natural Selection?
Organs/ structures that no longer serve a purpose and have disappeared or reduced in size
Vestigial Organs/Structures
Being able to blend in with your environment.
camouflage
Allele frequencies remain constant from generation to generation.
What is genetic equilibrium?
Type of reproductive isolation that occurs due to mating at different times of the day.
What is temporal isolation?
When an organism completely dies out.
What is Extinction?
Name one evidence of evolution
homologous structures, similar embryos, fossils, DNA analysis
When the average trait is selected for in a population, the type of selection is called
What is stabilizing selection?
speciation, new species
Sexual isolation that occurs when species are separated by bodies of water.
What is geographical isolation?
When one species changes into two or more different species
Speciation
Body structures on different organisms that are similar in function but did not evolve from the same ancestor (bird wing and butterfly wing)
What are Analogous Structures?
Evidence that supports evolution that studies the very early development of a fetus.
What is embryology?
Descent with modifications means...
What is over generations, natural selection can change the characteristics of populations giving rise to new species?
Type of diagram that shows how closely related organisms are by using branches.
What is a cladogram?