bankFinal exam questions and complete correct answers
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bank-Final exam questions and complete correct answers
What percentage of the group A population are type A2?
Match the fisher-race notation with the correct Weiner notation: r"
Match the fisher-race notation with the correct Weiner notation: R0
What frequency of the population is D positive?
...
bank-Final exam questions and complete correct
answers
1). What percentage of the group a population are type a2?
Ans: 20%
2). Match the fisher-race notation with the correct weiner notation: r"
Ans: Ce
3). Match the fisher-race notation with the correct weiner notation: r0
Ans: Dce
4). What frequency of the population is d positive?
Ans: 85%
5). After adding antigen and antibody to a test tube, one large agglutinate was observed. how
should this reaction be graded?
Ans: 4+
6). Abo blood group antigens are expresses as ____ traits.
Ans: Codominant
7). Polyspecific antihuman globulin contains
Ans: anti-IgG AND anti-C3d
8). Using wiener nomenclature, a patient is r' what rh antigens does this patient possess?
Ans: C, e
Name the anti-h lectin
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, 9).
Ans: Ulex europaeus
10). An individual lacking all antigens of the rh blood group system is classified as
Ans: Rh null
11). All of the following statements regarding abo antibodies are true except:
a) they are implicated in hemolytic transfusion reactions
b) they are naturally occurring and expected
c) they are not produced in neonates until after 12 months of age
d) they are routinely igm and react optimally at room temperature
Ans: They are not produced in neonates until after 12 months of age
12). A blood sample from a 90-year-old man was submitted to the blood bank for a type and
screen before surgery. the forward type demonstrates as a group a, whereas the reverse
type appears to be group ab. the most likely cause of the discrepancy is:
Ans: that patient has low-titer isoagglutinins
13). An individual who is group a cannot produce a child who is group b? t/f
Ans: False
14). Match the following phenotypes with the most probable genotype in the weiner
nomenclature: dce
Ans: R2R2
15). Match the following phenotypes with the most probable genotype in the weiner
nomenclature: dce
Ans: R1R1
16). The genotypes of parents are as follows: bo and ab. determine the percentage of
genotypes of each possible combination in the mating of these parents.
Ans: 25% AB, 25% AO, 25% BB, 25% BO
17).
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, The genotypes of parents are bo and ab. determine the percentage of phenotypes of each
possible combination in the mating of these parents.
Ans: 25% AB, 25% A 50% B
18). The most serious transfusion reactions are due to incompatibility in which of the following
blood group systems?
Ans: ABO
19). Briefly explain why testing for the d antigen using high-protein anti-d reagent requires that
an rh control reagent must also be tested.
Ans: the control should be negative this ensures we are testing properly
20). The expression of the gene that can be observed is called
Ans: Phenotype
21). Name the direct gene product of the b gene
Ans: D-galactose
22). Group o donor red blood cells cannot be transfused to a person who has "bombay blood
because the red cells of the donor contain
Ans: H antigen
23). The immediate spin testing on a unit of donor blood with anti-d is negative. a weak d test
is performed on the unit of donor blood and exhibits a 2+ reaction. the donor blood unit is
labeled as
Ans: D positive
24). Name the transferase enzyme and what sugar it transfers for the following gene: h
Ans: L-fucose
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