Evolution Review

What is the ultimate source of variation?

Mutations

What process does this picture represent?

Natural Selection

Organisms with desirable traits are more likely to survive long enough to reproduce and carry on those desirable traits. This definition describes _________________.

Natural Selection

Which Layer of rock is the oldest?

A

What type of dating fossils do scientist compare layers of rock to determine the relative age of a fossil?

Relative dating

Any change in a DNA sequence is called a ___________.

Mutation

The picture shows an example of Homologous structures Vestigial structures Mutation An adaptation

B. Vestigial Structure

What does the picture below represent What does the picture below represent? (evidence that all organisms evolved from a common ancestor)

Homologous structures

Who is credited with the theory of natural selection?

Charles Darwin

Comparing different organisms' skeletal structures, DNA, and embryonic structures all provide evidence that supports the theory of a. selective breeding. c. evolution. b. genetic resistance. d. species separation.

c. evolution.

Which of the following is not a mechanism that contributes to evolution? a. genetic drift c. embryology b. mutation d. natural selection

c. embryology

Two methods of dating fossils

Absolute and relative dating.

When an individual travels to a new population and introduces new genes into that population by breeding, this is called

Migration (gene flow)

A single bacterium divides and begins a new population A single bacterium divides and begins a new population. All resulting bacteria have identical DNA. This population has no a. Selection c. adaption b. Variation d. overpopulation

b. Variation

When an individual has a trait that helps it survive in an environment, the trait is called a(n)

adaptation

Which of these is Not a method that changes the gene frequency in populations over time? Mutations Genetic drift Overproduction Natural selection Sexual selection

c) Overproduction

This is called ___________. Of all the sea turtles that hatch in a year, only 1 of 10,000 will survive to adulthood to reproduce. This is called ___________.

Overproduction

When humans produce organisms with desirable traits, this is called

Artificial selection

In what type of rock are most fossils found?

Sedimentary rock

Hardened remains of organisms found in rock that provide evidence that organisms have changed over time are called

fossils

The study of looking at organisms at their embryo stages is called _____________ and suggests that all organisms evolved from a common ancestor.

Name four pieces of evidence that supports the theory of evolution

Homologous structures Fossil Records Vestigial Structures Embryology Biochemistry

The situation below is an example of ________ which can cause a population to change over time.

Migration- An organism travels to a new population and shares it’s traits there.

A random process that can cause a population’s variation to change is called __________.

Genetic drift

The situation below represents what mechanism causing evolution? 1.  2.  3.  4.

Natural Selection 1.  2.  3.  4.

Evolution can only occur if a population has Speciation Variation Mutations Many different species living together

Picture This! What word does each picture represent

Homologous Structures

Vestigial Structures

Extinction

Speciation

Carrrying Capacity

Charles Darwin

Natural Selection

Embryology

Fossils

Relative Dating

Absolute Dating