DNA REPLICATION-SCIENCE

DNA

-          DNA is a large polymer (molecule made of subunits called nucleotides)

-          Hershey and chase discovered that DNA was the molecule incharged of carrying genetic information

-          Radioactivity is the characteristic that some elements can destroy the particles of the atom

-          Virus is DNA and protein

-          Dna is hereditary. Proteins aren’t

-          Chargaff was measuring the proportion of bases.  Amounts of nucleotides vary among species

-          Dna´s diameter was constant and stable. wilkings and franklin. Double helix

-          One strand of dna down and other up (antiparalelism)

-          Purines (A/G): two rings. pyrimidines (T/C): one ring

-          Dna 20 amino acids. Building blocks of life

-          Dna replication: copy of itself. Mitosis. autosomes

-          Meiosis is the same process but with sexual cells

-          To reproduce: separate the strands, rebuild (sugar, phosphate, base), enzyme nee needs something to grab strands. 3oh

-          Todos los azucares tienen 5 carbonos

-          Cells are constantly dividing. Every cell has a copy of the same dna

-          HELICASE

-          Rna primase: empieza reparacion de DNA

-          Dna polymerase

-          No puede juntarse 3 y 5

synthesis IS THE PROCESS OF REPLICATION