Exam 2: Pedigree Analysis and Genetic Counseling

Question 1

Why are humans hard to study genetics on?

Answer 1

No controlled mating, long generation time, and smaller family sizes

Question 2

Autosomal recessive Pedigree Pattern

Answer 2

Unaffected parents have affected children and tends to skip generations

Question 3

Autosomal dominant Pedigree Pattern

Answer 3

At least one parent is affected when passing the trait on to thier opffspring

Question 4

X-linked recessive Pedigree Pattern

Answer 4

Male is affected but father is not. Males are affected more often than females.

Question 5

X-linked Dominant Pedigree Pattern

Answer 5

Does not skip generations. Biased towards women. Affected fathers will have all affected daughters and mother carriers will pass on the trait 1/2 the time

Question 6

Genetic Counseling

Answer 6

Gives info about genetic conditions and is non-directed. Helps with interpreting genetic risk, medical implications, mode of inheritance, and reproductive options

Question 8

CVS

Answer 8

Can be done earlier around 10th-12th week of pregnancy and can give instant results, but is more invasive

Question 9

Amniocentesis

Answer 9

Has to be done later around 15th-18th week of pregnancy and cells must be cultured which takes longer for results to come back but less invasive