Heredity

Question 1

Majority of Malposition or malformations of jaws arise from?

Answer 1

Inherited patterns

Question 2

Heredity of Class II Div 1 malocclusions

Answer 2

Possible polygenic inheritance: Mandibular retrognathia with a smaller body of mandible and reduced overall mandibular length

Question 3

Hereditary of Class II Div 2 malocclusions

Answer 3

Strong evidence for genetic as main etiology factor

Autosomal dominant with incomplete penetrance and variable expressivity

Question 4

What does polygenic mean?

Answer 4

Combination of genetic and environmental

Question 5

What does incomplete penetrance mean?

Answer 5

Some people with the variant do not develop features of the disorder

Question 6

Heredity of Mandibular Prognathism

Answer 6

Polygenic or multifactorial trait

Autosomal dominant