Types of Inheritance

Question 1

what are the first 22 chromosomes from both parent called

Answer 1

Autosomes

Question 2

what is the 23rd chromosome from both parents called

Answer 2

• Sex chromosomes
• Sex linked/X-linked

Question 3

what are the different types of inheritance

Answer 3

1. autosomal dominant
2. autosomal recessive
3. Sex-linked dominant
4. sex-linked recessive

Question 4

what is an example of an autosomal dominant disease

Answer 4

huntington’s disease

Question 5

what is an example of autosomal recessive disease

Answer 5

PKU

Question 6

what is an example of a sex-linked dominant disease

Answer 6

Rett syndrome

Question 7

what is an example of a sex-linked recessive disease

Answer 7

• colour blindness
• haemophilia
• Duchenne muscular dystrophy

Question 8

define Co-dominance

Answer 8

Codominance is a situation where two or more alleles are equally dominant. This means that if both alleles are present, they will both be observed.

Question 9

what is an example of Codominance

Answer 9

blood group AB - IAIB

Question 10

define what multiple alleles are

Answer 10

Multiple alleles are when there are more than two alleles for a particular characteristic.

Question 11

What is an example of multiple alleles

Answer 11

• Blood groups A (IA)
• Blood group B (IB)
• Blood group O (i)

Question 12

What is an example of incomplete dominance

Answer 12

Red and White petals