Question 47
Mendelian InheritanceThe table below indicates the result of an experiment during which grains of different colours in two maize cobs were counted
Maize Cob I: White 30, Pink 60, Red 30
Maize Cob II: White 50, Pink 99, Red 49
Which of the following ratios agrees with the result?
- A.9:3:3
- B.1:2:1
- C.1:3:1
- D.2:1:1
- E.2:3:2
Show the answer and explanation
Answer: B (1:2:1)
Explanation
Cob I: 30 : 60 : 30 = 1 : 2 : 1; cob II: 50 : 99 : 49 ≈ 1 : 2 : 1 (incomplete dominance).