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Classification

QuestionAnswer
classification putting objects into similar groups
taxonomy the science of classifying organisms
species a group of similar organisms which can successfully interbreed with each other and not organisms from other species to produce fertile offspring
variation within a species within groups of similar organisms, individual members show different characteristics
heredity passing on of characteristics from parents to offspring by way of genes - genetic inheritance
gene a section of DNA that codes for a specific protein
why do biologists classify organisms? -2 reasons 1- to simplify their research 2- to facilitate communication between scientists
composition of chromosomes: 40% strands of DNA tightly coiled around 60% proteins called histones
Name the two groups of nitrogenous bases: purines-adenine and guanine and pyramidines-cytosine and thymine THE BASE PAIRS BOND WITH WEAK HYDROGEN BONDS BTW
formation of nucleotides: phosphate group, deoxyribose sugar and a nitrogenous base
How do nucleotides attach? the phosphate groups from a nucleotide bonds with the pentose sugar in the next nucleotide, whose phosphate group bonds with the following one and so on ... this forms a polynucleotide chain
Which scientists discovered the structure of DNA and what is it called? james watson & francis crick - double helix shape
Created by: serrraphina
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