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Standard X
Biology
Question

Which of the following depicts Mendel's dihybrid ratio?
  1. 9 : 3 : 3 : 1
  2. 3 : 1
  3. 9 : 7
  4. 15 : 1

A
9 : 7
B
9 : 3 : 3 : 1
C
15 : 1
D
3 : 1
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Solution
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A dihybrid cross is a cross between F1 offspring (first - generation offspring) of two individuals that differ in two traits of particular interest.
For example : RRyy / rrYY or RRYY/ rryy parents result in F1 offspring that are heterozygous for both R and Y (RrYy)
Thus, Mendel's dihybrid ratio is depicted by: 9:3:3:1

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Which of the following depicts Mendel's dihybrid ratio?
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