Unit 3 Quiz

Who began the science of taxonomy more than 250 years ago?

• Charles Darwin

• Carl Linnaeus

• Gregor Mendel

• Louis Pasteur

Which of the following best describes the process that leads to the color variation in moths?

• Random chance

• Human intervention

• Adaptation to the environment

• Sudden mutation

Which of the following is an example of microevolution?

• Explosion of new life forms after a mass extinction

• Formation of new species

• Different genotypes and phenotypes for coat color in canines

• Large-scale evolutionary changes

What does macroevolution involve?

• Gradual change in allele frequencies

• Formation of new species or other taxa

• Different genotypes and phenotypes

• Small-scale evolutionary changes

What is an example of a structural adaptation?

• Black bears hibernate all winter.

• Plants grow toward the sun.

• Owls have excellent vision and sharp talons.

• Birds migrate in winter.

What is a common misconception about adaptations?

• They make organisms perfect.

• They occur randomly without any benefit.

• They are always harmful.

• They happen overnight.

What is necessary for advantageous adaptations to occur?

• Heritable variations

• Environmental stability

• Random chance

• Immediate survival needs

What does variation among a population refer to?

• The visible or invisible differences among individuals of a population

• The identical traits shared by all individuals in a population

• The environmental changes affecting a population

• The genetic mutations that occur in a laboratory setting

What type of mutations can be passed on to offspring?

• Somatic cell mutations

• Germ line mutations

• Environmental mutations

• Temporary mutations

What is a consequence of human interference in artificial selection?

• Increased genetic diversity

• Genetic diversity remains the same

• Reduced genetic diversity

• No effect on genetic diversity