LIFE SCIENCE

Detailed explanation-1: -Scarred eyebrow is an acquired trait which is never passed on to the offspring because scarring does not change the genes of the reproductive cells of the parent.

Detailed explanation-2: -For example, a scar is a physical characteristic that results from an injury, not gene expression. A scar on a mother’s arm will not be passed down to her children. Therefore, the characteristic described by the student, which has not been inherited from their parents, is a scar on their arm.

Detailed explanation-3: -An acquired characteristic is a non-heritable change in a function or structure of a living organism caused after birth by disease, injury, accident, deliberate modification, variation, repeated use, disuse, misuse, or other environmental influence. Acquired traits are synonymous with acquired characteristics.