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

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

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

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