Practice Incomplete Dominance (3.4.2) - Genetics - IB 12 Biology
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Incomplete Dominance

Practice - Incomplete Dominance

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is incomplete dominance?

💡 Hint: Think about mixing colors.

Question 2 Easy

In the example of snapdragons, what colors do the red and white parents produce?

💡 Hint: Consider the colors of the flowers of the parents.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the result of crossing a red flower and a white flower in incomplete dominance?

Red
White
Pink

💡 Hint: Think about what happens when colors mix.

Question 2

In incomplete dominance, the phenotype is what?

True
False

💡 Hint: Is it a mixture of both traits?

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Consider a plant species where red flowers (RR) and blue flowers (BB) show incomplete dominance producing violet flowers (RB). If two violet plants are crossed, what are the expected offspring ratios for red, violet, and blue flowers?

💡 Hint: Construct a Punnett square to visualize the combinations.

Challenge 2 Hard

A certain species of fish has incomplete dominance for fin color where red (RR) and white (rr) combine to form pink (Rr). If a pink fish breeds with a red fish, what percentage of the offspring would you expect to be pink?

💡 Hint: Use the Punnett square method to calculate the outcome.

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