14

Question 1

Autosomal dominant

Answer 1

appears in every generation, on average. 50%

Question 2

Autosomal recessive

Answer 2

An autosomal allele inherited in a recessive pattern may skip expression in generations 25%

Question 3

X-linked recessive

Answer 3

more common in men.

Question 4

X-linked dominant

Answer 4

unlikely. very lethal

Question 5

nondisjunction

Answer 5

Failure of sister chromatids or homologous chromosomes to separate during nuclear division

Question 6

aneuploidy

Answer 6

cell’s carry too many or too few copies of a chromosome

Question 7

Trisomy:

Answer 7

3 of one type of chromosome

Question 8

Monosomy:

Answer 8

1 of one type of chromosome

Question 9

amniocentesis

Answer 9

fetal cells shed into the fluid inside the amniotic sac are tested for genetic disorders

Question 10

Obstetric sonography (ultrasound)

Answer 10

forms images of the fetus’s developing limbs and internal organs

Question 11

Preimplantation Diagnosis

Answer 11

Clump of cells formed by three mitotic divisions after in vitro fertilization
One can be removes to be analyzed