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WAEC Biology 1998 Question 57

Question 57

Mendelian Inheritance

In a cross involving a heterozygous red flowered plant (Rr) and a white flowered plant (rr), what is the probability that the offspring will be Rr?

  1. A.1
  2. B.1/2
  3. C.1/4
  4. D.3/4
  5. E.2
Show the answer and explanation

Answer: B (1/2)

Explanation

Rr × rr gives Rr, Rr, rr, rr, so 2 out of 4 offspring (1/2) are Rr.