Theory
Natural Selection
definitions
Evidence
How a Population Changes
100
The "Father of Evolution"
Who is Charles Darwin?
100
How Darwin said evolution works--a process called _____ _____.
What is natural selection?
100

A change in the frequency of a gene (allele) in a population over time

Evolution

100

structures that are no longer needed or used..."leftovers" of evolution--like our appendix or the hind bones in whales.

What are vestigial structures?

100

All of the genes in a population are called the ____ ____. The changes in the frequency of these genes as  selected by nature are what lead to evolution.

What is the gene pool?

200
Place where Darwin visited during his journey around the world where he made many observations to support his theory.
What are the Galapagos Islands?
200

Natural selection starts with variations in a population. Variations are ________________________.

What are individual differences in a population?

200

When organisms don't reproduce with each other because of the way they act

Behavioral isolation

200
Remains of past living organisms that can show change over time.
What are fossils?
200
Definition of population.
What is a group of the same species that live together in an area, breeding and producing fertile offspring?
300
Name for a hypothesis in science that is not proven, but has lots of evidence to support it. The _____ of evolution.
What is a theory?
300

Name two things that can lead to variation/differences in a population.

What are mutations and sexual reproduction?

300

When animals don't reproduce with each other because of the timing of their reproductive cycles

temporal isolation

300
Structures that are the SAME in form, but serve a different purpose now--suggesting an evolutionary relationship--like the forelimbs of mammals.
What is homologous?
300

List four of the five ways we can show evidence of evolution.

Comparative embryology, DNA evidence, homologous structures, vestigial structures, fossils

400

Lamarck thought that acquired traits could cause evolution.  He was wrong about that. Traits must be _______ to cause evolution.

Heritable (genetic or coming from the gametes)

400

Which color trait in moths would be most favored by natural selection in a dark forest

Dark coloring

400

When organisms who are better suited to their environments have a higher chance of surviving and breeding than those who are less suited.

Natural Selection

400
Molecular or biochemical evidence for evolution deals with comparing the _____ code of different organisms.
What is DNA?
400
Pattern of evolution where a population of the same species moves apart and develops different adaptations over time, making them no longer the same species--like the land and marine iguanas.
What is divergent evolution?
500

These are the greatest evidence for change over time (evolution)

Fossils

500

Define of evolution.

A change in the frequency of a gene in a population over time

500

A type of long-term macroevolution that involves reproductive isolation over a long period of time and a new species evolves.

speciation

500

Direct observations of adaptations are often used as evidence for evolution. What observations did Darwin make about the tortoises and finches (birds) on the Galapagos that suggests they are well-adapted to their environments?

What are the different tortoise shells for reaching food, different beak size of the finches (birds), and the marine iguana that can swim for food?

500

List 4 of the 5 things that could cause a population's genes to change over time.

What are mutations, movement IN or OUT of the population, selecting mates based on certain traits, organisms reproducing more than others, change by chance--like a population breaking off to FOUND a new population or population bottleneck (a population getting wiped out to only a few individuals)?

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