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Darwin and Evolution

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Questions and Answers

What did biologist John Endler study in the 1970s to understand evolution?

Trinidadian guppies (correct)

Wild mustard

MRSA (methicillin-resistant S.aureus)

Soapberry bugs

What was the main factor that determined the evolution of color traits in Trinidadian guppies based on John Endler's research?

Dietary preferences

Climate change

Attracting mates and avoiding predators (correct)

Genetic mutations

What is the smallest unit that can evolve?

Species

Individuals

Communities

Populations (correct)

Which type of selection is exemplified by the selective breeding of domesticated plants and animals?

Artificial selection Signup and view all the answers

What term is now used instead of 'Particles of Inheritance' according to the text?

Genes Signup and view all the answers

According to Darwin's observations, why do individuals with traits that give a higher probability of surviving and reproducing tend to leave more offspring?

As a result of their traits increasing their chances of survival and reproduction. Signup and view all the answers

What is the main concept of natural selection as described in the text?

Individuals with heritable traits better suited to their environment tend to survive and reproduce. Signup and view all the answers

How did Gregor Mendel contribute to the understanding of heredity?

By conducting experiments on pea plants that provided evidence for a mechanism of heredity. Signup and view all the answers

Why did Darwin's observations include the fact that individuals within a population often vary greatly in their traits?

To show that variations in traits can lead to natural selection and adaptation over time. Signup and view all the answers

What key factor contributes to the increase in frequency of favorable adaptations in a population over time according to the text?

Natural selection favoring individuals with traits better suited for the environment. Signup and view all the answers