Microevolution

Microevolution happens in

• species

• individuals

• populations

• households

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Q1. What is the significance of structures in evolutionary biology?

• A) analogous structures

• B) homologous structures

• C) vestigial structures

• D) none of the above

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The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?

• Dark moth

• Light moth

• Both will be equally successful

• Neither will be successful

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Two organisms that are closely related would have

• very similar DNA sequence

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequence

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What is the difference between microevolution and macroevolution?

• Microevolution occurs over long periods, macroevolution occurs over short periods.

• Microevolution involves changes within a species, macroevolution involves changes that create new species.

• Microevolution involves changes that create new species, macroevolution involves changes within a species.

• Microevolution and macroevolution are the same.

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Michael gives examples of the difference between microevolution and macroevolution. Match the specific examples to the correct type of evolution.

Groups:

(a) Macroevolution

,

(b) Microevolution

• dogs evolving from wolves

• single-cell organism evolving into a fish

• sheep developing curly wool

• small sparrows evolving larger bodies

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Which of the following statements accurately describes the role of mutations in evolution

• Mutations are the raw material for evolution, but most mutations do not result in evolution.

• Most mutations result in a species becoming more dangerous or aggressive.

• An organisms can decide to mutate if the environment makes a mutation necessary for survival.

• Mutations are almost always beneficial for an individual.

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Comparing human hemoglobin of chimpanzees, horses, kangaroos, and chickens, reveal that humans have the fewest amino acid differences with 

• Kangaroos

• Horses

• chickens

• chimpanzees

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Which organism goes in the B position?

• 
• 
• 
• 

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The palmarus longus tendon, pictured here, no longer serves a purpose in humans, but provides evidence of our species descendance from tree-dwelling ancestors. The palmarus longus tendon is an example of:

• a vestigial structure

• a homologous structure

• bipedalism

• convergent evolution

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