Natural Selection

Which process describes a genetic change that happens randomly?

• mutation

• genetic engineering

• selective breeding

• artificial selection

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Dark colored mice becoming more common on lava flows and light colored mice becoming more common on the desert sand is an example of...

• natural selection

• genetic engineering

• genetic mutations

• artificial selection (selective breeding)

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Which process below best describes when humans choose plants or animals to reproduce based on specific traits they'd like to see in their offspring.

• natural selection

• genetic engineering

• genetic mutations

• artificial selection

What impact do mutations have on a population of organisms?

• they increase the variety of traits within a population

• they decrease the variety of traits creating only two options

• they increase the chance a population will survive if the environment stays exactly the same

• they decrease the chance that the population will survive changes in the environment

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What concept does this change in population best illustrate?

• natural selection "survival of the fittest"

• selective breeding (artificial selection)

• genetic engineering

• genetic mutations

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Which part of the cell must a scientist look to study genetic material?

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What is an adaptation?

• A feature that helps only a plant grow.

• A feature that helps a living thing survive.

• A feature that helps a living thing walk.

• A feature that that helps only animals survive.

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What is the full name of D.N.A.?

• Ribonucleic Acid

• Deoxyribonucleic Acid

• Dat Nifty chromosomal Acid

• Don't kNow the Answer

Which of the following is NOT a D.N.A. base?

• A (Adenine)

• T (Thymine)

• C (Cytosine)

• G (Guanine)

• U (Uracil)

True or False? A tightly wound bundle of DNA is a chromosome.

• False
• True

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