ANSC 1032 Study Guide - Final Guide: Chromosomal Crossover, Nitrogenous Base, Dna Replication
13 Feb 2018
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Document Summary
Genetics: the study of how dna codes for the biochemical reactions of life. Chromosome- the dna containing structures inside the nucleus of cells. Numbers vary by species (human: 46, dog: 78, cows: 60) Dna- deoxyribonucleic acid: a complex molecule composed of nucleotides joined together with phosphate sugars (basically the stuff genetic codes are made of) Gene- a short segment of a chromosome (containing several nucleotides) that directs the synthesis of a speci c protein or the performance of a certain regulatory function. Nucleotide- an individual segment of deoxyribose (sugar) + phosphate + a nitrogen base. Nitrogen base- one of four chemical units on the dna molecule that form the combinations that code for protein manufacture. Genome- the complete genetic material of an organism. Alleles affect the same trait, but cause the production of a different protein, thus creating a. The various forms of a given gene are called alleles difference in how that trait is expressed.
