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Combo with Campbell Biology 9th Edition - Chapter 21 and 1 other Flashcards

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678515624GenomicsThe study of whole sets of genes and their interactions within a species, as well as genome comparisons between species0
678515625BioinformaticThe use of computers, software, and mathematical models to process and integrate biological information from large data sets1
678515626linkage mapthe order of genes and other inherited markers in the genome and the relative distances between then -more often to cross over and have variation if genes are far away because they have more opportunity and time to do so2
678515627Genome shotgun approachSkip the linkage mapping and physical mapping stages and starts directly with the sequencing of DNA fragments from randomly3
678515628homeoboxone of various similar homeotic genes that are involved in bodily segmentation during embryonic development4
678515629metagenomicsDNA from a group of species is collected from an environmental sample and sequenced5
678515630gene annotationThe identification of protein coding genes within DNA sequences in a database6
678515631proteomicsthe branch of genetics that studies the full set of proteins encoded by a genome7
678515632pseudogenesA DNA segment very similar to a real gene but which does not yield a functional product; a gene that has become inactivated in a particular species because of mutation.8
678515634repetitive DNANucleotide sequences, usually noncoding, that are present in many copies in a eukaryotic genome. The repeated units may be short and arranged tandemly (in series) or long and dispersed in the genome.9
678515637transposable elementsGenetic element that has the ability to move (transpose) from one site on a chromosome to another.10
678515639simple sequence DNAcontains many copies of tandemly repeated short sequences11
678515641short tandem repeats(STR) simple sequence DNA containing multiple tandemly repeated units of two to five nucleotides. variations in STRs act as genetic markers in STR analysis, used to prepare genetic profiles12
678515643multi gene familiesgroup of genes that encode related products13
678515645evo devoEvolutionary developmental biology; a field of biology that compares developmental processes of different multicellular organisms to understand how these processes have evolved and how changes can modify existing organismal features or lead to new ones.14
678515647Cytogentic Mapsprovides the starting point for more detailed mapping of the human genome15
678515649Dideoxy Chain Terminationo Cut the DNA from many copies of an entire chromosome into overlapping fragments short enough for sequencing o Clone the fragments in plasmid or phage vectors o Sequence each fragment o Order the sequence into one overall sequence with computer software16
678515651Sequencing by Synthesiso Resulted in massive increases in speed and decreases in the cost of sequencing entire genome o Made cloning in the shotgun approach unnecessary17
678515653Reverse Geneticsusing DNA sequence, geneticists can study genes directly, without having to infer genotype from phenotype as in classical genetics18
678515654BioinformaticsThe use of computers, software, and mathematical models to process and integrate biological information from large data sets19
678515655ProteomicThe systematic study of the full protein sets (proteomes) encoded by genomes20
678515656What do proteins do?Proteins actually carry out most of the activities of the cells; we must study when and where protein are produced in an organism and networks21
678515657Gene Size- Prokaryotes smaller genomes than eukaryotes -Eukaryotes, no relationship between genome size and phenotype see corn/ mouse/giant panda22
678515658Number of Genes-Prokaryotes 1.5-7.5k vs. Eukaryotes 5-40k -Lower than expected in E considering genome size in human thought there would be 50-100k genes but there are less than 21k -Get more bang for buck b/c of alternative splicing, post translational modification of proteins regulation by mRNA etc.23
678515659Gene Density-Prokaryotes have a greater density than eukaryotes -Mammals have the lowest gene density so far -Average Prokaryotic gene is 1000bp -Average Eukaryotic gene is 27,000bp- lots of introns in addition - more complex regulatory sequences genes interspersed w/ vast amount of non-protein coding regions24
678515660PseudogeneA DNA segment very similar to a real gene but which does not yield a functional product; a DNA segment that formerly functioned as a gene but has become inactivated in a particular species because of mutation.25
678515661Repetitive DNANucleotide sequences, usually noncoding, that are present in many copies in a eukaryotic genome. The repeated units may be short and arranged tandemly (in series) or long and dispersed in the genome.26
678515662Transposable elementsA segment of DNA that can move within the genome of a cell by means of a DNA or RNA intermediate; also called a transposable genetic element27
678515663TransposonsA segment of DNA that can move within the genome of a cell by means of a DNA or RNA intermediate; also called a transposable genetic element. o "cut-and-paste"; removes the element from the original site o copy-and-paste"; leaves behind o Both require an enzyme called transposase28
678515664RetrotransposonsA transposable element that moves within a genome by means of an RNA intermediate, a transcript of the retrotransposon DNA. o always leave a copy at the original site during transposition29
678515665Short tandem repeat (STR)Simple sequence DNA containing multiple tandemly repeated units of two to five nucleotides. Variations in STRs act as genetic markers in STR analysis, used to prepare genetic profiles.30
678515666Multigene FamiliesA collection of genes with similar or identical sequences, presumably of common origin31
678515667Identical Gene Families-Genes for the three largest rRNA molecules; transcribed from a single transcription unit that is repeated tandemly hundreds to thousands of times in one several clusters in the genome of a multicellular eukaryote - Helps makes millions of ribosomes needed for active protein synthesis32
678515668Non Identical Multigene FamiliesNonidentical gene are two related families of genes that encode globin a group of proteins that include a and b polypeptide subunits of hemoglobin33

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