BSC 101 exam 2 Questions with correct answers

BSC 101 exam 2 Questions with correct answers Describe DNA structure - Double stranded helix In a sequence where C-G and A-T which pair up because of hydrogen bonds Explain "the central dogma" - DNA-RNA-PROTEIN. Transcription is the copying of DNA to code to RNA one nucleotide at a time so it is complementary to the DNA. Translation is when RNA gets translated into protein (every 3 ran bases codes for an amino acid) Implications of genetic code being universal - All living organisms ever discovered use the same code. More evidence that all life shares a common evolutionary ancestor process of gene expression - turning on a gene to produce RNA and protein. All cells have the same genome and each cell controls which genes in the genome are expressed and when. gel electrophoresis - Used to compare DNA. Produces a pattern. Separates DNA strands based on length and removes charged molecules (ex. paternity test) PCR - Use when only one DNA sequence is available (one drop of blood). Takes a few copies