Genetics in Action: Incomplete Dominance

Genetics in Action: Incomplete Dominance

Assessment

Interactive Video

Science, Biology

10th - 12th Grade

Hard

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In 1900, Karl Correns discovered that the traditional principles of dominance and recessiveness in genetics do not always apply. Through his experiments with four o'clock flowers, he found that crossing purebred red and white flowers resulted in pink offspring, demonstrating incomplete dominance. This concept also applies to animals, as seen in the breeding of chestnut brown and creamy white horses, producing Palomino horses. Correns' work highlighted that some gene pairs do not follow the typical dominant-recessive pattern.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What discovery did Karl Correns make regarding flower color?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

How did the offspring of the red and white four o'clock flowers appear?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the term used to describe the phenomenon where neither gene is dominant?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

Can incomplete dominance occur in animals? Provide an example.

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What color do the offspring of a chestnut brown horse and a creamy white horse produce?

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