DNA Structure and Timeline Flashcard

Front

Who were the scientists responsible for determining the structure of DNA?

Back

Watson and Crick, along with Rosalind Franklin and Chargaff, contributed to the understanding of DNA's structure.

Front

What is the base pairing rule in DNA?

Back

Adenine pairs with Thymine, and Guanine pairs with Cytosine.

Front

What does DNA stand for?

Back

Deoxyribonucleic acid.

Front

What significant contribution did Rosalind Franklin make to the discovery of DNA's structure?

Back

She produced X-ray diffraction images that showed DNA formed a helical shape.

Front

If there is 37% guanine in a DNA sample, what percentage of cytosine is present?

Back

37% cytosine, due to the base pairing rule.

Front

What are the building blocks of DNA called?

Back

Nucleotides.

Front

What are the three components of a nucleotide?

Back

A phosphate group, a sugar (deoxyribose), and a nitrogenous base.

Front

What is the shape of the DNA molecule?

Back

A double helix.

Front

What is Chargaff's rule?

Back

In any DNA sample, the amount of adenine equals thymine, and the amount of guanine equals cytosine.

Front

What year did Watson and Crick publish their model of DNA?

Back

1953.