How are the plant height genotypes TT and Tt similar?(1 point)
Responses
Both are examples of heterozygous genotypes.
Both are examples of heterozygous genotypes.
Both are expressed as a tall phenotype.
Both are expressed as a tall phenotype.
Both are examples of homozygous genotypes.
Both are examples of homozygous genotypes.
Both are expressed as a short phenotype.
None of the above
Both are expressed as a tall phenotype.
The two genotypes, "TT" and "Tt," are similar in that both result in a tall phenotype. To understand why, we need to understand the basics of genetics.
In this case, the "T" represents the allele for tallness, while "t" represents the allele for shortness. When an organism has two copies of the same allele, it is said to be homozygous for that trait. In this question, "TT" is an example of a homozygous genotype. On the other hand, when an organism has two different alleles for a trait, it is called heterozygous. Thus, "Tt" is an example of a heterozygous genotype.
In terms of expression, the allele for tallness (T) is dominant over the allele for shortness (t). This means that even if an organism has one copy of the dominant allele (in the heterozygous genotype "Tt"), it will still express the tall phenotype.
Therefore, both the homozygous genotype "TT" and the heterozygous genotype "Tt" will result in a tall plant height, making them similar in terms of phenotype expression.