Level 1: Core Concepts Check (Aiming for a Pass - 'S')

1. Define: What is a gene?

2. Define: What is a phenotype?

3. Define: What is a genotype?

4. Identify: What is the difference between a dominant and a recessive allele?

5. Recall: What are the sex chromosomes for a human male?

6. Recall: What are the sex chromosomes for a human female?

7. Define: What is meant by "homozygous"?

8. Define: What is meant by "heterozygous"?

9. Recall: What is the tool used to predict the outcomes of a genetic cross?

Level 2: Connecting the Dots (Aiming for a Credit - 'C')

1. Apply: In cats, black fur (B) is dominant to white fur (b). What are the possible genotypes of a black cat?

2. Construct: A homozygous black cat (BB) is crossed with a white cat (bb). Use a Punnett square to show the genotypes of the offspring. What percentage of the offspring will be black?

3. Explain: Explain why men are more likely to suffer from sex-linked genetic disorders like colour blindness than women.

4. Differentiate: Explain the difference between a gene and a chromosome.

5. Discuss: What is genetic engineering and give one example of how it is used in agriculture or medicine.

Level 3: Exam Challenge (Aiming for a Distinction - 'A'/'B')

1. Genetic Problem: A man who is heterozygous for brown eyes (Bb) marries a woman with blue eyes (bb). Brown eyes (B) are dominant to blue eyes (b). (a) What is the genotype of the woman? (b) Draw a Punnett square to show all possible offspring from this cross. (c) What is the probability (as a percentage) that their child will have blue