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Evolution and Species Definition Quiz

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Questions and Answers

What is the main difference between evolution and species?

Evolution is only observed in the fossil record, while a species is defined through selective breeding.

Evolution involves cumulative changes in heritable characteristics of a population, while a species refers to a group of individuals that can mate and produce fertile offspring. (correct)

Evolution only occurs in plants, while a species is a term used for animals.

Evolution leads to the formation of new species, while a species remains constant over time.

How does the fossil record contribute to the evidence for evolution?

Fossils are only found in living organisms, providing direct evidence of evolution in progress.

Fossils provide evidence that all species on Earth were created at the same time.

The fossil record shows ancient forms of life that are extinct, illustrating specific evolutionary changes. (correct)

The fossil record demonstrates that no evolutionary changes have occurred over time.

What is selective breeding and how does it relate to evolution?

Selective breeding refers to the deliberate breeding of plants and animals for specific traits, contributing to artificial selection. (correct)

Selective breeding is the natural process through which only the strongest animals survive.

Selective breeding is a random process that does not impact the frequency of traits in a population over time.

Selective breeding is a term used for breeding animals in the wild without human intervention.

How do individuals with advantageous traits contribute to evolution according to natural selection?

Individuals with favorable traits pass them on to their offspring, increasing the frequency of those traits in the population over time. Signup and view all the answers

What happens when individuals of two different species mate?

They may produce offspring, such as a mule from a horse and donkey, which are fertile. Signup and view all the answers

In selective breeding, why are individuals with specific traits chosen for reproduction?

Individuals with specific desirable traits are selected for reproduction to pass on those traits. Signup and view all the answers

Why is it important that traits passed on through selective breeding are heritable?

Traits must be heritable to ensure they are passed down reliably to future generations. Signup and view all the answers

How does the concept of fitness relate to natural selection?

'Fitness' represents an organism's ability to survive and reproduce in its environment, influencing its evolutionary success. Signup and view all the answers

What is the primary mechanism by which evolution occurs?

'Survival of the fittest' favors individuals with beneficial traits for survival and reproduction, leading to evolutionary change. Signup and view all the answers

Why do individuals with advantageous traits have higher fitness according to natural selection?

'Fitness' measures an organism's success at surviving and reproducing based on its inherited characteristics. Signup and view all the answers