Introduction to Psychology 10th Edition by Rod Plotnik,Haig Kouyoumdjian

تمرين 11

A hairlike structure that contains tightly coiled strands of the chemical DNA (deoxyribonucleic acid) is called a (a) _____. A specific segment on the strand of DNA that contains instructions for making proteins is called a (b) _____. A theory that different species arose from a common ancestor and that those species survived that were best adapted to meet the demands of their environments is called the theory of (c) _____.