Biology
Inherittance
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#25 A woman with normal color vision, whose father was red-green color blind man. What is the probability of her 1st born child being color blind?
A) 0.50
B) 0.25
C) 0.75
D) 0.66
#26 Polygenic inheritance forms the basis of
A) Co-dominance
B) Continuous variations
C) Linkage
D) Polyploidy
#27 Two parents each of blood group A, have a daughter of blood group O, what is the probability that their next child will be a boy who has blood group O
A) 0.125
B) 0.25
C) 0.50
D) 0.75
#28 In the F2 generation of a di-hybrid cross, the phenotypes occured in the ratio 3:1, what does this result indicate?
A) Alleles segregate independently
B) Polygenic inheritance
C) Co-dominance
D) Gene linkage
#29 The four children of two parents each have a different blood group of the ABO series. What were the blood groups of the parents?
A) A and AB
B) A and B
C) A and O
D) B and AB
#30 Mary's father has hemophilia, an X-linked recessive trait, but her husband does not. What is the that chance her son will have the disease?
A) 0%
B) 25%
C) 50%
D) 100%
#31 Which of the following is dominant in heredity?
A) Color blindness
B) Rh factor
C) Hemophilia
D) Albinism
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