(TERMS) PATTERNS OF INHERITANCE Flashcards
Is a pictorial representation of a family history
Pedigree
Also known as propositus (female, proposita). The
person from whom the pedigree is initiated
Proband
Mating between closely related people– relatives
Consanguinity
If consanguinity is mating between relatives, this is
the degree of relatedness closer than law permits
(Tamarin)
Incestuous
involving sexual intercourse between two members
of the same family
Incestuous
refers to the appearance in the phenotype of genetically determined traits
penetrance
chance of an alelle to be expressed
penetrance
it is the degree of penetrance
expressivity
if the degree of relatedness is closer than law permits
incestuous
suggested by mary lyon states that the barr body(sex chromation) represented an inactive X chromosome
Lyon hypothesis
pictorial representation of a family history, essentially a family tree that outlines the inheritance of onr or more characteristics
pedigree
carries the gene but does not have the trait
obligate carrier
monozygotic
identical twins
dizygotic
fraternal twins