DNA Flashcards
(31 cards)
Cell
basic unit of structure and function in every living thing
chromosome
a double rod of condensed chromatin: a coiled structure made of DNA and proteins
DNA
Deoxyribonucleic acid: the genetic material that carries information about an organism and is passed from parent to offspring
Gene
a segment of DNA on a chromosome that codes for a specific trait
Erwin Cargaff
Did research and discovered DNA had equal amounts of A and T and equal amounts if C and G, in every living organism
Rosalind Franklin
Took the first photo of DNA
This photo is called photo 51
Lead to the discovery of the shape of DNA
James Watson and Francis Crick
Watson and Francis Crick
Credited with discovering the shape of DNA
DNA is a double helix (twisted ladder)
Base Pair rules
A always pairs with T
C pairs with G
Bases
Adenine (A)
Thymine (T)
Cytosine ( C)
Guanine (G)
Replication
the process by which the genome’s DNA is copied in cells
Enzymes
complete DNA replication
helicase
unzips DNA
primase
starts DNA building
DNA polymerase
builds new DNA
Ligase
glue okazaki fragments
process
the order of the enzymes
leading
one side of the strand builds faster
lagging
only build a portion of DNA at a time
okazaki fragments
a portion of dna
semiconservative
a double helix is composed with an old strand and a new strand
protein synthesis
DNA become protein
transcription
the process of making an mRNA copy of a gene’s DNA sequence
translation
the process of translating the sequence of a messenger RNA (mRNA) molecule to a sequence of amino acids during protein synthesis.
mutations
Any change in the DNA sequence of a cell