Biology 1001A Lecture Notes - Lecture 5: Fetus, Intron, 1000 Genomes Project
1 May 2013
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Document Summary
It has a nuclear genome and a mitochondrial genome. A genome is all of the dna sequence in one copy of an organism"s chromosomes. A given plant cell has 3 different genomes. Plants also have chloroplasts with a genome inside. Most of the time, a genome refers to the nuclear genome. The size of a genome is known as c . The c of a genome refers to how much dna you have in one copy of your genome. Sometimes, c is expressed as a weight (pictograms) , or sometimes it"s expressed in base-terms (mb = megabase = 1 million bases) Bacteria & archaea have relatively small genome sizes, though the range of genome size among different species is pretty large. Linear chromosomes are almost only found in eukarya. One c-value is distributed over one set of chromosomes. C value refers to only one copy; i. e. if it is diploid, only look at one of the pair.
