Question

What does the Notation “tt” mean to Geneticists?

Answer 1

Notation tt:

1. The notation tt means the homozygous condition, wherein the homologous pair contains same alleles of a gene.
2. Alleles are different forms of one gene.
3. In the pea plant, tall and dwarf are the two contrasting traits for stem height.
4. ‘t’ is used for dwarfness, which is recessive.
5. ‘tt’ refers to the homozygous condition with a short plant, it is expressed in the phenotype.