Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur because DNA contains phosphorus and no sulfur.
Epithelium are the sheet of cells that covers human's body surfaces. The functions of the epithelium are: to protect the skin, to absorb intestine, to secret glands, to exchange gas.. The oral epithelium , also called oral mucosa is the “skin” inside the mouth, and it covers most of the oral cavity apart from the teeth. Keratinization is the property that distinguish the oral epithelium from the other skin epithelium. <span>Keratinization is the process by which skin cells mature as they move from deep within the skin to the skin's surface.</span>
D. Endocrine. It produces and secretes hormones, which regulate cells and organs.
Phenotype are generally the visible characters which we can see like the tallness of a tree..which might be homozygus with TT or heterozygus withTt genes which is called the genotype of organism or plant