Question

If the addition of new genes to a new population occurs by chance but not multiple times, it is called​

Answer 1

Answer:

If the addition of new genes to a new population occurs by chance but not multiple times it is called FIXATION.

Answer 2

Answer:

FIXATION is the process of adding new genes to a new population by chance but not several times.

Explanation:

Fixation is the preservation of biological tissues against deterioration owing to autolysis or putrefaction in the fields of histology, pathology, and cell biology. It stops any ongoing metabolic reactions and may improve the mechanical strength and stability of the treated tissues. Tissue fixation is an important stage in the fabrication of histological sections, with the goal of preserving cells and tissue components while allowing for the preparation of thin, coloured sections. This permits researchers to look into the structure of tissues, which is dictated by the shapes and sizes of macromolecules like proteins and nucleic acids (found in and around cells).