Home › NEET UG › Biology › Principles of Inheritance and Variation › Brown eyes (B) is dominant over blue (b). Bb fat…
Brown eyes (B) is dominant over blue (b). Bb father × bb mother. Probability of blue-eyed child:
A3/4
B0
C1/4
D1/2 (Bb × bb → 1/2 Bb (brown) : 1/2 bb (blue))
Answer & Solution
Correct answer: D. 1/2 (Bb × bb → 1/2 Bb (brown) : 1/2 bb (blue))
Bb × bb: father gives B (50%) or b (50%); mother always gives b. Offspring: 50% Bb (brown), 50% bb (blue). P(blue) = 1/2.
Related questions
Haemophilia and colour blindness are MORE COMMON in MALES than females because they are:Down syndrome is most commonly caused by:Sickle cell anaemia is caused by:The sex of a human baby is determined by:In the human ABO blood group system, a person with blood group AB has the genotype:In snapdragon (Antirrhinum), RR (red) × rr (white) gives F1 plants that are PINK. This patIn a DIHYBRID cross of YyRr × YyRr, the F2 phenotypic ratio is:In a monohybrid cross of Tt × Tt, the F2 PHENOTYPIC ratio is: