Which statement is the most accurate regarding the end result of DNA replication

Question

Which statement is the most accurate regarding the end result of DNA replication? Select one: a. Two dissimilar DNA molecules b. Two identical DNA molecules c. Two identical DNA molecules, one composed entirely of the original or parent DNA and the other molecule composed entirely of newly synthesized DNA d. Two identical DNA molecules, each composed of an original or parent strand of DNA and a newly synthesized strand of DNA e. The original intact DNA molecule and a single strand of RNA Which scientist constructs the first accurate model of DNA? Select one: a. James Watson b. Linus Pauling c. Francis Crick d. Rosalind Franklin e. A and C

Explanation / Answer

Ans 1: (C.)

Explanation: The result of DNA replication is two DNA molecules consisting of one new and one old chain of nucleotides. This is why DNA replication is described as semi-conservative, half of the chain is part of the original DNA molecule, half is brand new.

Ans 2: (e.) A and C (James Watson & Francis Crick)

James Watson was a pioneer molecular biologist who is credited, along with Francis Crick and Maurice Wilkins, with discovering the double-helix structure of the DNA molecule. The trio won the Nobel Prize in Medicine in 1962 for their work.

Other Scientists achievements:

Linus Pauling: In the 1950's, Linus Pauling became known as the founder of molecular biology due to his discovery of the spiral structure of proteins (Taton, 1964). Pauling's discoveries contributed to Watson and Crick's breakthrough of the DNA double helix.

Rosalind Franklin: The DNA molecule is shaped like a twisted ladder. James Watson and Francis Crick solved the structure of DNA. Other scientists, like Rosalind Franklin and Maurice Wilkins, also contributed to this discovery.

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