Question

In a genetics laboratory, two heterozygous tall plants (Tt) are crossed. If tall (T) is dominant over short (t), what are the expected phenotypic results

Answer 1

The expected phenotypic results can be determined using a Punnett square. When crossing two heterozygous tall plants (Tt), the possible genotypes of their offspring are:

1. TT (tall)
2. Tt (tall)
3. Tt (tall)
4. tt (short)

Since tall (T) is dominant over short (t), individuals with either TT or Tt genotype will exhibit the tall phenotype. Only individuals with the tt genotype will exhibit the short phenotype.

So, the expected phenotypic results are 75% tall and 25% short.