Question

gregor mendels research formed the basis of the field of
o genetics.
o dominance.
o recessiveness.
o selective breeding.

Explanation:

Gregor Mendel's experiments with pea plants led to the discovery of fundamental laws of inheritance. Genetics is the study of genes, heredity, and genetic variation. Mendel's work on traits being passed from parents to offspring (like pea color, shape etc.) laid the ground - work for understanding how genetic information is transmitted. Dominance and recessiveness are concepts within genetics (e.g., dominant and recessive alleles). Selective breeding is a practice (humans choosing which organisms to breed) that can be informed by genetic principles but is not the field that Mendel's work directly founded.

Answer:

genetics.