Bio DNA profiling

M-Rna /trna 

mRNA contain genetic code and carry copy of gene from nucleus to ribosome where translation take place 

pre mRNA is modified to allow to give rise to more than one protein

pre mRNA splicosome enzyme cut out introns an rearrange  exons at diff lengths  to produce diff A.A seq and diff protein therefor formed 

tRNA (bring 1 A.A to ribosomes) anticodon attach to specific codon on mRNA to ensure 

-primary structure correct 

-and therefor bonding and filing correct 

( adjacent A.A bond together during condensation reaction b peptide bonds)

explaining structure of protein

always mention two type fibrous globular

explain usage of enzyme to cut DNA result in fragments of diff length?

restriction enzyme cut down the DNA at specific recognition sites, these sites are not equally spaced along DNA, they hydrolyze the phodophsiter bond, there diff sized frag produced moving diff distances in gel electro.. 

liner vs circular dna

linear has more proteins

unbound phosphate

one fewer phoodophister bond

nuclear dan is linear while mitochondria DNA is circular