The Structure Of DNA Flashcards
What two scientists discovered the structure of DNA?
James Watson & Francis Crick (Wilkin)
Who proved DNA held genetic code
Avery
What is a mutation
A change in the sequence of bases
Who created an X-ray crystallograph of DNA
Rosalind Franklin
Who showed that bases came in pairs
Chargaff
Who discovered DNA
Meischer
What is a codon?
A triplet of bases
What is a nucleotide
A small group consisting of phosphate, sugar and nitrogenous Base. They form the structure of DNA.
What is DNA
Deoxyribonucleic Acid, the carrier of genetic information, found in chromosomes
What feature determines whether bases can form complementary base pairs
Hydrogen bonding, adenine 2, guanine 3
What is mitosis
Cell division
Where is DNA found?
In the chromosomes in the nuclei of all cells except for red blood cells
Nitrogenous Bases
Form the ‘rungs’ of the ladder, hold genetic information. Adenine, Thymine, Cytosine, Guanine and Uracil
Complementary Base Pairs
When a purine (Adenine and Guanine) is linked to a pyrimidine (Cytosine, Thymine and Uracil) by a hydrogen bond. The pairs are Guanine-Cytosine and Adenine-Thymine (Uracil in DNA).
Sugar
Deoxyribose sugar, part of nucleotide, sides of ladder. Forms sugar-phosphate backbone.
