pack 4- DNA Flashcards
gene definition
sequence of base pairs in dna that codes for a specific sequence of amino acids in a polypeptide chain
DNA=
deoxyribonucleic acid
mononucleotide made of
deoxyribose sugar
phosphate group
organic base
what is variable ina a mononucleotide
the base
structure of dna forms
mononucleotides join by phosphodiester bonds in condensation reactions
form two long chains(DNA strands) that twist and form a double helix
joined by hydrogen bonds between bases
complememtary bases
adenine-thymine
guanine-cytosine
number of h bonds between a-t
2
importance of complementary base pairs
keep uniform width throughout the helix- 3 ring structure
number of H bonds between g-c
3
rings fro each base pair
A and G have 2 ring structure
C and T have 1 ring structure
what is the dna made of
sugar phosphate backbone- hydrophilic
bases-hydrophobic
nucleotides
