pedigrees

Question 1

what is a pedigree

Answer 1

A diagrammatic representation of a family tree. They are used to identify in an inheritance pattern of genetic traits and diseases family.

Question 2

can you determine geno/phenotypes from looking at a family tree

Answer 2

yes mostly

Question 3

how to determine if the trait is autosomal

Answer 3

Generally equal numbers of females/ males

Affected females dont require an affected father.

Question 4

how to determine if the trait is dominant autosomal

Answer 4

Found in every generation - there are nigh numbers of this trait
* Affected parents can have an unaffected child
* An affected individual must have atleast one affected parent

Question 5

how to determine if the trait is recessive autosomal

Answer 5

low numbers of affected individuals
*it skips generations so unaffected parents can have an affected child
- 2 people with recessive characteristics WILL have an affected child

Question 6

are sex linked traits dominant or recessive

Answer 6

recessive

Question 7

how to determine if a trait is sex-linked

Answer 7

Males are affected more than females.

skips generations

Question 8

if a mother is affected by a sex-linked trait, her children are…

Answer 8

sons are all affected

daughters are affected IF their father is also affected

Question 9

if a father is affected by a sex-linked trait, his children are…

Answer 9

sons-no relation

daughters will be affected if mothers carry or are also affected