Fill in the blanks from Genetic material, Evolution, and transcription, translation,and gene expression

Helicase- an enzyme that opens the double helix in replication
Phosphorus 32- Isotope used to label the phage DNA in the hershey chase expiriment
Chargaff-Determined that A=T and C=G in any given organism
Anti parallel-Term used to describe the fact that the two strands of DNA run in opposite direction
Watson and Crick- Scientists that published a brief article in nature in 1953 that described the chemical structure of DNA
Rosalind Franklin- Scientist who provided the x ray diffraction pattern that was instrumental for watson and cricks model
Origin of replication- location on every chromosome where replication begins
1869-year DNA was dicovered
Miescher-scientist credited with the discovery of DNA
Primer-"starting block" for DNA replication
Taq Polymerase- Enzyme used in PCR
Mullis- scientist who invented PCR
Agarose- Isolated from seaweed used to make gels for DNA electrophoresis
Methelye Blue- "safe stain used for staining DNA after gel electrophoresis
Frameshift Mutation- when a deletion or insertion of a nucleotide creates a shift in the sequence offsetting the previous sequence
Promoter- region of DNA that directs the binding of RNA Polymerase thus where the initiation of transcription occurs
Somatic and Germline cells- two types of mutations according to cell type
Transformation-Means of bacterial genetic variation that was discovered by griffith in 1928
Inducible- describes an operon that is usually turned "off" but can be turned "on"
operator- region of DNA to which a repressor protein binds in prokaryotes
stuctural genes- part of an operon that code for proteins with related functions
Transcription-"DNA- directed" RNA synthesis
Silent synonymous mutations- a point mutation which has no effect on the amino acid coded for
Lysogenic- Term for the phage cycle in which the phage incorporates it's DNA into the host celll's genome
Plasmid- extra chromosomal DNA in prokaryotes that may confer an advantage
TRP - the co repressor in the trp operon
Enteric Bacteria- General term for gut dwelling bacteria
Reverse Transcriptase- enzyme found in retroviruses
Codon- three consecutive bases on mRNA that code for an amino acid ( or a termination sequence)
Anti codon- part of tRNA that corresponds to the codon, acts as an adapter from nucleotides to amino acids
Temporal isolation- type of prezygotic reproductive isolating mechanism exhibited by cicadas
Disruptive selection- type of natural selection that favors the extreme traits
Gene flow- the movement of genes into or out of a population
Pre Zygotic- reproductive isolation that occurs before fertilization
Emigration- movement of individuals out of a population
Sexual selection- another term for non random mating, where the species choose their mates based on their phenotypical aspects
Sexual dimorphism- phenomenon in which the two genders of the same species have two different phenotypes ex. birds
Biogeography- the study of geographical distribution of fossils and living things
Fitness- measure of an individuals relative reproductive succes
Malfus- wrote an essay arguing that organisms tend to produce many more offspring than the enviroment can support , helped darwin in his ideas of natural selection
genetic drift- the shange in allele frequencies over time as a result of random chance
Lamarck- proposed the notion of inheritance of aquired traits as a mechanism for evolution


remeber these are not all of the definitons for the three chapter just the one's he used on the test in the fill in the blank sections.

god david you are such a freak

umm the avatar is not my fault but harrison messing around as an administrator

that would explain it then...

there are FIBs !!!!!!!!!!!!!!????????????

no but you will need to know these definitions for the multiple choice and the essays so i thought it might be useful

There are Fill in the Blanks

are you sure because im pretty much positive that its gonna be like the last final and alot of people are saying there are fibs

Majority of people i have talked to have said there WILL be FIB's

yes there are fibs

all gone

jibloperson that post just raped my computer

im callin santi Im not sure about that!

ok well im not sure but he said he needed to grade it quickly since it was the last final

well if you're not sure then if you study the material you should know the fib's anyway so it's not that big of a deal.

There's no way in hell he could grade it fast enough. He started writing it today you know...