Who Proposed That the Structure of DNA Is a Double

question 16

Multiple Choice

Who proposed that the structure of DNA is a double helix with two polynucleotide chains running in opposite directions and held together by hydrogen bonding between pairs of nitrogenous bases?

• A)Hershey and Chase
• B)Chargaff
• C)Franklin
• D)Watson and Crick

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Definitions:

Risk Factors

Attributes, characteristics or exposures that increase the likelihood of developing a disease or injury.

HIV

Known as Human Immunodeficiency Virus, this pathogen compromises the immune system and, without intervention, can progress to Acquired Immunodeficiency Syndrome (AIDS).

Instructing

The act of giving information or directing someone to do something, typically used within the context of teaching or guiding.

Heterosexual Transmission

The spread of a disease or condition from one person to another through sexual contact between individuals of the opposite sex.