Understanding Variation: Genetic and Environmental Factors

Understanding Variation: Genetic and Environmental Factors

Assessment

Interactive Video

Biology

University

Hard

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The video tutorial explains variation within populations, highlighting genetic and environmental causes. Genetic variation arises from inherited genes and mutations, while environmental variation results from living conditions. The tutorial also covers continuous and discontinuous variation, emphasizing how characteristics are influenced by both genes and the environment. It concludes with a summary of these concepts.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one of the main causes of genetic variation within a population?

Environmental changes

Inherited genes

Dietary habits

Physical exercise

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do most genetic mutations affect an organism's phenotype?

They always cause significant changes

They have no effect

They are always beneficial

They lead to immediate extinction

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of an acquired characteristic?

Sun tan

Height

Blood type

Eye color

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are acquired characteristics not passed on to offspring?

They are environmentally induced

They are only temporary

They are too complex

They are not encoded in DNA

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What determines most characteristics in an individual?

Only genes

Only the environment

Random chance

A combination of genes and the environment

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of variation results in a range of phenotypes between two extremes?

Discontinuous variation

Environmental variation

Continuous variation

Genetic variation

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of variation is usually caused by genes only?

Acquired variation

Discontinuous variation

Continuous variation

Environmental variation