What is selective breeding?

Important Questions on Variation and Inheritance

MEDIUM

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 4 - Variation and Inheritance>End of Chapter Review>Q 12

Explain how selective breeding could be used to breed rabbits with really fluffy ears.

HARD

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 4 - Variation and Inheritance>End of Chapter Review>Q 13

Why was Darwin's trip on HMS beagle very important in helping him develop his theory of natural selection?

HARD

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 4 - Variation and Inheritance>End of Chapter Review>Q 13

Suggest why Darwin's theory of natural selection was opposed when he announced it?

HARD

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 4 - Variation and Inheritance>End of Chapter Review>Q 14

Look at the figure given above. Use your knowledge of natural selection to explain the following situation. The number of red frogs (like the one in the middle of the picture) decreases in subsequent generations, to the point that there are none remaining in $50$ years’ time.

HARD

Lower Secondary Stage 9

IMPORTANT

Cambridge Lower Secondary Science Stage 9: Student's Book>Chapter 4 - Variation and Inheritance>End of Chapter Review>Q 14

Look at the figure above. Use your knowledge of natural selection to explain the following situations. The number of red frogs increases over the years and in $50$ years’ time there are more red-coloured frogs than brown frogs.