L48 Anthro 3283 Lecture Notes - Centromere, Intron, Sister Chromatids
Document Summary
Dna replication: a-t, g-c, to replicate, the two strands unzip, and each side attracts its complimentary bases. The replicated strand is an exact copy of the original dna: dna replication is a semi-conservative process, one half is new and one half is old. Ribonucleic acid (rna: the base thymine is replaced with uracil. Exons are information-rich dna: exons come together and are replicated, mrna is used in dna replication single stranded, mrna moves to the ribosomes outside the nucleus trna (transfer rna) Meets the mrna out of the nucleus carries three bases. Each three base sequence is specific to/codes for an amino acid trna has an amino acid attached. The chain of amino acids come together to form a protein: mrna dictates the order of the trna attachment which dictates the amino acid sequence. Some genes make proteins, other genes regulate other genes: protein-coding genes, regulatory genes, effect how active protein-coding genes are.
