DNA replication & Protein synthesis

identify the three subunits of a nucleotide

phosphate, sugar, nitrogen base

A DNA strand has the following sequence of bases: AAGTCG. What would be the sequence of bases on the complementary strand?

UUCAGC

What two individuals have received credit for discovering the double helix structure of DNA?

watson and crick

is DNA a single strand or double strand

double (double helix)

what is the function of DNA

genetic info

where is DNA found in the cell

nucleus

what are DNA nitrogenous bases

ATCG

is RNA single or double strand

single

what is the function of RNA

carry genetic info

where is RNA found in the cell

ribosome

what are RNA nitrogenous bases

UACG

what is transcription

part of the DNA molecule is read and copied into a molecule called mRNA

what part of the cell does transcription take place

nucleus

where does the mRNA take the code after being transcribed

ribosome

what happens during translation

the instructions carried by mRNA are read by tRNA which assembles and make the protein molecules

define point shift mutation

gene mutations involving changes in one or few nucleotides, occur at a single point in the DNA sequence

define frameshift mutation

genetic mutation caused by a deletion or insertion in a DNA sequence that shifts the way the sequence is read

list the 4 types of chromosomal mutations

deletions, duplications, inversions, translocations

deletions

involve the loss of all or part of a chromosome

duplications

produce extra copies of parts of a chromosome

inversions

reverse the direction of parts of chromosomes

translocations

occur when part of one chromosome breaks off and attaches to another

chemically A & G have two rings called

purines

C & T have one ring and are called

pyrimidines