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JIPMER 2008
Exam
JIPMER
Year
2008
Subject
Zoology
Chapter
Principles of Inheritance and Variation

JIPMER 2008 · Zoology · Principles of Inheritance and Variation

Which of the following is a test cross ?

Which of the following is a test cross ?

Options

  1. ATt×tt\mathrm{Tt} \times \mathrm{tt}
  2. BTT×tt\mathrm{TT} \times \mathrm{tt}
  3. CTt×Tt\mathrm{Tt} \times \mathrm{Tt}
  4. Dtt×tt\mathrm{tt} \times \mathrm{tt}

Correct answer

A. Tt×tt\mathrm{Tt} \times \mathrm{tt}

Step-by-step solution

A test cross is a cross between heterozygous F1\mathrm{F}_1 hybrid and double recessive homozygous eg, Tt×\mathrm{Tt} \times tt to show whether F1\mathrm{F}_1 is homozygous or heterozygous.
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