Genetics and Health Week 3

Question 1

Define Allele

Answer 1

Pair of genes on a chromosome that determines the hereditary characteristics

Question 2

Define Genotype

Answer 2

combination of alleles

Question 3

Define Phenotype

Answer 3

characteristics that a person exhibit

Question 4

What is the difference between Dominant and Recessive?

Answer 4

Dominant (inherited from one parent)

Recessive (inherited from both parents)

Question 5

Define Codominance

Answer 5

Both genes are expressed, no gene is dominant over the other

Question 6

Define Incomplete Dominance

Answer 6

Blending of traits

Question 7

Red Blood Cells (Define which sugar is attached)

1) Type A
2) Type B
3) Type AB
4) Type O

Answer 7

1) Acetyl galactosamine
2) Galactose
3) Mixed
4) Neither

Question 8

Define the two types of Thalassemia

Answer 8

1) Thalassemia minor: one of the beta-globin genes is defective producing life long (mild) anaemia
2) Thalassemia major: both beta-globin genes are mutated, resulting in severe anaemia