Biology Semester 2 Final Review

When the DNA of an organism is altered it is referred to as…

• Mutation
• Gene Flow
• Genetic Drift
• Sexual Selection

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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

Inherited trait that helps an organism survive and reproduce is a(n) __________.

• Fossil

• Adaptation

• Ancestor

• Natural selection

Why are advantageous traits more likely to be passed onto offspring?

• Because those that have the trait are more likely to survive and reproduce.

• Because they come from dominant alleles.

• Because they come from recessive alleles.

• Because the trait is an acquired phenotype.

Do organisms "decide" to evolve and change?

• Yes, they know they need to change to survive 
• No, they change because of natural selection

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An organism's genetic make-up:

• phenotype
• recessive
• genotype
• dominant

An organism's appearance or other observable characteristics:

• phenotype
• recessive
• genotype
• dominant

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Mutations are important because they bring about

• death of the organism in which they develop

• genetic variation needed for a population to evolve

• benefits for the individual, not for the population

• challenges that will make the organism stronger

What is suggested by the anatomical similarity of different species of vertebrates (animals with a backbone)?

• no evolutionary relationships between the groups

• recent common ancestry

• similar environments in the past

• evolution from a distant common ancestor

Closely related species tend to be found

• farther apart geographically

• closer together geographically

• randomly distributed across the landscape

• evenly distributed across the landscape