How are the plant height genotypes TT AND Tt similar
Both are expressed as a short phenotype
Both are examples of homozygous phenotypes
Both are examples of heterozygous genotypes
Both are expressed as a phenotype
Actually, both TT and Tt genotypes are not expressed as a short phenotype. They can be expressed either as tall or short depending on the dominance and recessiveness of the gene involved.
However, both TT and Tt genotypes can be similar in the sense that they both contain the dominant allele of the gene for plant height. In this case, the dominant allele determines the tall phenotype. Only the tt genotype would be expressed as a short phenotype, as it contains two copies of the recessive allele.
Regarding the other options, TT is an example of a homozygous genotype because it contains two copies of the same allele (dominant in this case). Tt is an example of a heterozygous genotype because it contains two different alleles (dominant and recessive).
In summary, the similarities between TT and Tt are that both can have the same dominant allele and can be considered as homozygous or heterozygous genotypes. They may or may not be expressed as short phenotypes depending on the dominance and recessiveness of the gene involved in plant height.