Watson and Crick - ANSWERS____________________ developed the double helix model of DNA.
T. H. Morgan - ANSWERS________________ showed that genes are located on chromosomes
Fredrick Griffith - ANSWERS____________ discovered transformation
double helix - ANSWERSthe structure of a DNA molecul...
double helix - ANSWERSthe structure of a DNA molecule
Transformation - ANSWERSA change in genotype and phenotype due to the
assimilation of external DNA by a cell.
Fredrick Griffith Experiment; pathogenic - ANSWERSIn the ______________, when
heat killed pathogenic cells are mixed with living nonpathogenic cells, the living cells
become ______________
Avery, McCarty, MacLeod - ANSWERS_________, __________, and ________
identified the transforming substance as DNA
bacteriophages (phages) - ANSWERSA virus that infects bacteria
Virus - ANSWERSDNA enclosed by a protective coat, often protein; infects a cell and
takes over the cell's metabolic machinery
Hershey and Chase - ANSWERS_____________ concluded that the genetic material of
the bacteriophage was DNA, not protein.
Hershey-Chase Experiment; T2 phages - ANSWERSIn the _______________,
radioactive sulfur and phosphorus was used to track the protein and DNA, respectively,
of ___________ that infected bacterial cells; radioactive DNA was found in cells, so
concluded that DNA was genetic material
Nitrogenous base, sugar, and phosphate group - ANSWERS3 components of a
nucleotide
Erwin Chargaff's Rules - ANSWERSDNA composition varies from one species to the
next, but in any species there is an equal number of A and T bases, and an equal
number of C and G bases
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