PUNNETT SQUARE: Genotypic and Phenotypic Ratio and Probability

Which is the correct genotypes of the cross TT x Tt

• A. TT, Tt

• B. TT, tt

• C. TT × tT

• D. TT only

If Tall is dominant over short, which is the correct genotype of Tall (heterozygous).

• A. TT

• B. Tt

• C. tt

• D. tT

If Curly (C) is dominant and straight (c) is recessive, which phenotype matches with cc?

• A. Straight

• B. Curly

• C. Curly and Straight

• D. None of the given

What is the chance of having straight hair if Cc is crossed with Cc. (C=curly, c=straight hair)?

• A. 25%

• B. 50%

• C. 75%

• D. 100%

If tall heterozygous (Tt) plant is crossed with homozygous short (tt), what would be the possibility to produce offspring with short phenotype?

• A. 25%

• B. 50%

• C. 75%

• D. 100%