Multiple choice

A cross between F1 hybrid and a recessive parent gives the ratio of

  1. 3:1

  2. 2:1

  3. 1:1

  4. 9:1

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A cross between an F1 hybrid (Tt) and a recessive parent (tt) is a test cross. The resulting offspring will be 50% Tt and 50% tt, yielding a 1:1 phenotypic ratio.