Unit 8 - Evolution

The first to describe a working mechanism for evolution by natural selection:

• Gregor Mendel

• Charles Darwin

• Albert Einstein

• Antonie van Leeuwenhoek

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Match the following

• Evolution

• The biological process of change over time by which descendants come to differ from their ancestors

• Artificial Selection

• Humans breed plants or animals for favored traits

• Natural Selection

• Organisms with traits better suited to their environment are more likely to survive and reproduce

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Evolution of populations depends on 4 main factors. Match:

• Heritability of traits

• The geologic record shows that life has existed on Earth for 3.5 billion years

• Environmental Pressures

• Differences in DNA between individuals causing unique traits in a population

• Genetic variation

• Characteristics that can be passed from parents to offspring

• Time

• The natural forces that affect survival (ex. predators, lack of resources)

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Identify the necessary conditions for evolution to occur:

a

b

c

genetic variation

heritability of traits

environmental pressure

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Match the following

• Sudden event reduces population size

• Gene Flow

• Small group starts a new population

• Founder Effect

• Mixing of genes between populations

• Bottleneck Effect

• Change in DNA sequence

• Genetic Drift

• Change in alleles due to random chance

• Mutation

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Select the moth that is best suited for this environment.

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Use the image:

Due to predation, the light-colored mice are more likely to be​ (a)   . On the other hand, the black mice are more likely to be ​ (b)   , passing their genes on to their offspring.

• killed and eaten
• able to survive and reproduce

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Click on the best option

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Match the following sources of evidence for evolution:

• Intermediate fossils

• 
• Homologous structures

• 
• Embryology

• 
• Geography

• 
• Vestigial structures

• 

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Evolution acts on​ ​ (a)   not ​ (b)   .

• populations
• individuals

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