1. Tardigrade
  2. Question
  3. Biology
  4. Test cross of dihybrid ratio is 1: 1: 1: 1. It proves that

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Test cross of dihybrid ratio is 1 : 1 : 1 : 1. It proves that

Odisha JEEOdisha JEE 2011Principles of Inheritance and Variation

Solution:

The test cross is a cross between heterozygous $F_1$ hybrid and the double recessive homozygous. The test cross is used to determine whether the individuals exhibiting dominant character are homozygous or heterozygous. A cross between tall heterozygous $F_1$ hybrid with homozygous recessive ($P_1$) produces dominant and recessive character in equal proportion indicating that $F_1$ hybrids are heterozygous (test cross).