Biology 2581B Lecture Notes - Lecture 15: Genome Size, Paramecium, Intron
13 Oct 2017
School
Department
Course
Professor
Document Summary
The small population is an example of genomic meltdown/breakdown: Presumably this is why the wooly mammoth went extinct: note: the ones from 45,000 years ago likely disappeared because of excessive hunting. Sequencing was done by other teams and they just used bioinformatics to do it. Chromosomes in nucleus in are almost always linear: but euglena has circular nuclear genome for rrna with both fragmented and intact genes, also because both haploid chromosomes and polyploidy. Genes as units individually expressed: lots of genes in the nuclear genome, genes are not always individuals bricks with a promoter and then a gene. Trans-splicing is a special form of rna processing in eukaryotes where exons from two different primary rna transcripts are joined end-to-end and ligated. Oxytricha (ciliate: has eaten a whole bunch of algae to make it red, cyanobacteria or algae, 2 different nuclei and 2 different nuclear genomes, different from the nucleomorph one not similar to chlorarachniophyte.
