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INTEGRATED SCIENCE PRACTICE QUESTIONS

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VARIATION AND INHERITANCE

1.

(i)

Give two reasons why genetic variation is important in living organisms.

(ii)

Give three examples of genetic variations in humans.

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2.

(i)

What are chromosomes?

(ii)

State three uses of DNA testing in humans.

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3.

State three causes of genetic variation in human population.

(ii)

Give two ways in which genetic variation affects organisms.

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4.

(i)

What is rhesus factor?

(ii)

Explain briefly how the rhesus factor in humans could result in miscarriage.

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5.

A man with normal red blood cells is married to a woman who is a sickle cell carrier. With the aid of a genetic diagram, explain the genetic constitution of their children.

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6.

With the aid of a genetic diagram, explain briefly how a couple of normal skin colors produces an albino.

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