The technique used to separate DNA fragments based on size is: MCQ with Answer and Explanation

Explanation:
Spectrophotometry measures the absorbance of light by a solution at a specific wavelength, which is proportional to the concentration of the absorbing substance (Beer-Lambert law).

Explanation:
Estrogen, secreted by the developing ovarian follicles, promotes the development of female secondary sexual characteristics such as breast development, widening of hips, and distribution of body fat. Testosterone is the male sex hormone. Progesterone prepares the uterus for pregnancy, and prolactin stimulates milk production.

Explanation:
Morphology is the study of the form and external structure of organisms. Anatomy deals with internal structures, physiology with functions, and histology with tissues. Morphology includes aspects like shape, size, color, and pattern.