MEDT220 Lecture Notes - Lecture 14: Combined Dna Index System, Variable Number Tandem Repeat, Punnett Square

• School: University of Delaware
• Department: Medical Laboratory Sciences
• Course: MEDT220
• Professor: Lehman, Donald C

Document Summary

11:10 am: reminder: second life scavenger hunt due sunday the 8th. Dna held together by hydrogen bonds formed between deoxynucleotides. Human somatic cells (not sex cells) are diploid, contain 46 chromosomes, and have half their chromosomes originally derived from each parent. The same sequences of deoxynucleotides repeated consecutively (back to back) describes tandem repeats. A change in a single deoxynucleotide with a gene is an example of an allele, polymorphism, and point mutation. After a point mutation is made, it is considered a polymorphism and also affects alleles. 13% of our genome made up of sines. Most common doesn"t mean largest percent of genome; since they are small, they are found more throughout the genome, but don"t take up a large potion of it. Two or more nucleotides repeated in dna sequence. Same sequences, but number of times it is repeated differs between every person. Aka short tandem repeats (strs) and simple sequence repeats (ssrs)