1. Human Inheritance Lab Symbol conventions: H: dominant allele
h: recessive allele
H’: co-dominant allele
HH: homozygous dominant
hh: homozygous recessive
Hh: heterozygous
H_: one allele unknown

2. Can recipient detect foreign blood?
antigens
= good match
= agglutination, bad match
(antigens)
Agglutination:
B antibodies of
recipient detected
B antigens of
donor
Antibodies detect cells with wrong antigens
(antigens)

3. Which blood type is a universal donor?
Can not be detected by other types
Has no surface antigens
(antigens)
(antigens)

4. Which blood type is a universal recipient?
Can not detect other types
Has no antibodies
Why no antibodies?
Would destroy itself

5. Rh factor
Rh is a second gene associated with blood type
~50 different genes associated with blood type
Rh can be lethal, so tested before marriage
If mother is Rh+ (+-) and fetus recessive (--):
- Rh protein enters fetal blood through placenta
- Destroys fetal blood cells