As previously mentioned, Watson and Crick themselves had specific ideas about DNA replication, and these ideas were based on the structure of the DNA molecule. In particular, the duo hypothesized that replication occurs in a semiconservative fashion.
Causes and Types of Eye Infections. Examples of viral, fungal and bacterial eye infections include: 1  Pink eye, or conjunctivitis. 2  Conjunctivitis, also called pink eye, is a common, highly contagious eye infection that often is spread among children in day care centers, classrooms and similar environments.auses and Types of Eye Infections. Examples of viral, fungal and bacterial eye infections include: 1  Pink eye, or conjunctivitis. 2  Conjunctivitis, also called pink eye, is a common, highly contagious eye infection that often is spread among children in day care centers, classrooms and similar environments.
Red eyes usually are caused by allergy, eye fatigue, over-wearing contact lenses or common eye infections such as pink eye (conjunctivitis). However, redness of the eye sometimes can signal a more serious eye condition or disease, such as uveitis or glaucoma.old and flu. Bloodshot and puffy eyes, along with a runny nose, are common symptoms of a cold or flu. Red eyes in this instance typically are caused by a sinus infection or blocked sinuses, especially when accompanied with sneezing and coughing. Pregnancy.