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Understanding Natural Selection and Phenomena

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Understanding Natural Selection and Phenomena

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Questions and Answers

What is the purpose of choosing a null hypothesis in the context of the common garden experiment mentioned?

To confirm that environmental conditions directly cause color contrasts in Biston betularia moths.

To predict that moths from light and dark populations reared in polluted conditions will have similar pigmentation. (correct)

To determine if the offspring of moths from polluted environments will be lightly pigmented.

To test whether contrasting populations from different habitats maintain their characteristics in a common environment.

In a common garden experiment, what does the outcome of contrasting wing colors being maintained reveal about Biston betularia moths?

The color of the offspring is determined solely by the color of their parents.

Offspring from polluted environments inherit light pigmentation.

Contrasting characteristics from different habitats are retained despite the common environment. (correct)

The color contrasts are directly caused by environmental conditions.

After rejecting the initial null hypothesis, what is the alternative hypothesis tested regarding pigmentation in Biston betularia?

Pigmentation is not influenced by genetic inheritance.

Pigmentation can be altered through selective breeding.

Pigmentation is a genetic trait in Biston betularia moths. (correct)

Pigmentation is solely determined by environmental factors.

What genetic methodology is mentioned in the text as being used to study the inheritance of pigmentation in Biston betularia?

Gregor Mendel's genetic methodology Signup and view all the answers

Based on the common garden experiment, what can be concluded about the inheritance of pigmentation in Biston betularia offspring?

Lightly pigmented offspring will inherit the pigmentation of their parents. Signup and view all the answers

Why was it necessary to perform a common garden experiment with Biston betularia moths?

To observe if contrasting populations retain their characteristics under common conditions. Signup and view all the answers

What is the primary function of a null hypothesis in scientific experiments like the one mentioned in the text?

To serve as a baseline for comparison with the experimental results. Signup and view all the answers

What is one significant implication of rejecting the initial null hypothesis in this experiment?

A new hypothesis must be formulated and tested. Signup and view all the answers

How does the concept of genetic inheritance relate to the findings of the common garden experiment with Biston betularia?

Offspring inherited wing coloration patterns from their parents genetically. Signup and view all the answers

What does the mention of Gregor Mendel indicate about the study of pigmentation in Biston betularia?

Mendel's genetic methodology was critical in understanding pigmentation inheritance. Signup and view all the answers