BIOL 112 Lecture 21: Lecture 21 - Eukaryotic Genome

• School: McGill University
• Department: Biology
• Course: BIOL 112
• Professor: Frieder Schoeck

Document Summary

Tetraploids are big ! to be ! Mostly because their cells are bigger; the more dna you have the bigger your cells tends. Can tell by looking at bones ! Cell size may be used to estimate genome size ! Genome size varies from organism to organism ! **clicker question: the roundworm has a genome 100 million base pairs long (haploid #) encoding 20,000 genes. Humans have a genome 3 billion bp long. Humans really only have about 30,000 genes ! Humans have 100x more dna than they need to encode proteins ! > 600,000 wrong, humans have 30,000 genes ! Retained in the mrna transcript; eventually translated by ribosomes to give proteins! Take up most of the space of primary transcript ! Get spliced out of mrna transcript by enzymes ! !- splicing is a form of rna processing (happens before mrna is translated) !