GENETICS

Question 1

crossing over

Answer 1

exchange of genetic material between homologous chromosome pairs.

Question 2

co-dominance

Answer 2

when two alleles are expressed at the same time. ex. black and white.

Question 3

complete dominance

Answer 3

when one allele dominates another in heterozygous situation. ex. just black or just white.

Question 4

incomplete dominance

Answer 4

intermediate allele is expressed in heterozygous situation.
ex. grey.

Question 5

blood donor and receiving

Answer 5

A - A, O - A, AB
B - B, O - B, AB
AB - ALL, AB
O - O, ALL

Question 6

blood type parents

Answer 6

A - AA, AO
B - BB, BO
AB - AB
O - OO

Question 7

klinefelter syndrome

Answer 7

XXY, trisomy, male, sexual immaturity, inability to produce sperm, breast swelling.

Question 8

down syndrome

Answer 8

trisomy 21, female & male, intellectual disabilities, almond-shaped eyes, flattened face, short stature.

Question 9

turner syndrome

Answer 9

XO, monosomy, female, short stature, webbed neck, sexually underdeveloped.