Practice Mendelian Genetics – The Principles of Inheritance - 2.1 | Unit 5: Introduction to Genetics and Heredity | IB MYP Grade 9 Biology
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What are genes?

💡 Hint: Think about what information DNA contains.

Question 2

Easy

What is the difference between a dominant allele and a recessive allele?

💡 Hint: Consider how traits appear in an organism.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the Law of Segregation?

  • A. Alleles blend together
  • B. Alleles separate during gamete formation
  • C. All traits are inherited equally

💡 Hint: Think about what happens when gametes are formed.

Question 2

True or False: A homozygous tall plant would have the genotype 'Tt'.

  • True
  • False

💡 Hint: Consider the definitions of homozygous.

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Challenge Problems

Push your limits with challenges.

Question 1

A pea plant homozygous for yellow seeds (YY) is crossed with a plant homozygous for green seeds (yy). What are the genotypes and phenotypes of the offspring?

💡 Hint: Think about what alleles each parent contributes.

Question 2

Consider two plants, one being heterozygous for red flowers (Rr) and another homozygous recessive for white flowers (rr). Create a Punnett square and determine the phenotypic ratio.

💡 Hint: Set up the Punnett square carefully to visualize all potential outcomes.

Challenge and get performance evaluation