Mutants - Study guides, Class notes & Summaries

Key terms and concepts Biology 205 - Genetics Anticodon - answerA specialized base triplet at one end of a tRNA molecule that recognizes a particular complementary codon on an mRNA molecule. Bioinformatics - answerComputational information systems and analytical methods applied to biological problems such as genomic analysis. Comparative Genomics - answerThe study of relationships between genomic sequences of multiple species. Complementary Bases - answerTwo bases that pair together. A i...

CMMB 403 Tutorial Quiz 2 Question and answers correctly solved CMMB 403 Tutorial Quiz 2 What characterizes each abdominal segment of the ventral side of the larva? - correct answer anterior denticles (point posteriorly) and a posterior naked region, side by side Who looked at fly embryo to identify segmentation genes? - correct answer Christiane Nusslein-Volhard and Eric Wieschaus how do we identify genes or genotypes responsible for a particular phenotype? - correct answer knockou...

How did evidence from the study of metabolic defects contribute to the fundamental relationship between genes and proteins? - ANSWER -Garrod suggested that genes dictate phenotypes through enzymes that catalyze specific chemical reactions -Symptoms of an inherited disease reflected inability to synthesize a certain enzyme. -Linking genes to enzymes required understanding that cells synthesize and degrade molecules in a series of steps called the metabolic pathway. Describe the experiment by...

BIO 1A03 Test 2 Questions and Answers Already Passed one gene-one enzyme hypothesis each gene contains the information needed to make an enzyme What did George Beadle and Edward Tatum research? Relationship between genes and proteins using the Neurospora Crassa One gene-one enzyme hypothosis (Neuroposa Example) Neurospora can grow well on minimal medium (simple sugar, vitamins, inorganic salts), and therefore it must have enzymes produced by a certain gene that that transform these materials i...

ales to produce many heterozygotes with independent mutations. MUT(-/-) X WT (+/+) = het (+/-) 3. Breed independent heterozygotes to wild-type flies to produce more heterozygotes with the same mutation. het(+/-) X WT (+/+) = (+/+)(+/-) <--use this for next step 4. Breed these heterozygotes together to produce homozygotes and screen mutants for abnormal phenotypes. het(+/-) X het(+/-) = (+/+)(+/-)(-/-) <--lethal (examine the larvae) Characteristics of hedgehog mutant: (3) - answer1...

Explain how auxotrophic mutants can be isolated and how they inform us about metabolic pathways CORRECT ANSWER - screen for mutations in prototrophs (an organism capable of synthesizing all its metabolites from inorganic material) that cause them to become auxotrophic for a certain metabolite - map the mutation to a particular enzyme, then match enzyme to metabolic pathway - accumulations of the intermediate made before the blocked pathway help us piece together the biosynthetic pathways p...

Key terms and concepts Biology 205 - Genetics Anticodon - answerA specialized base triplet at one end of a tRNA molecule that recognizes a particular complementary codon on an mRNA molecule. Bioinformatics - answerComputational information systems and analytical methods applied to biological problems such as genomic analysis. Comparative Genomics - answerThe study of relationships between genomic sequences of multiple species. Complementary Bases - answerTwo bases that pair together. A i...

Fungi are important because of their ability to help many plants grow, cause disease in plants, make certain foods and beverages, and spoil food. All fungi have ____ in their cell walls. chitin The mechanism by which genes are transferred into bacteria via viruses is called transduction The source of variation among microorganisms that were once identical is mutation Intercalating agents act during DNA synthesis and often result in frame shift mutations. Gene transfer that requires cell-to-...

cytoplasmic organelles are: a. absent in prokaryotic cells and present in eukaryotic cells. b. present in both prokaryotic and eukaryotic cells. c. present in prokaryotic cells and absent in eukaryotic cells. d. absent in both prokaryotic and eukaryotic cells. correct answers a. absent in prokaryotic cells and present in eukaryotic cells E. coli is a useful model system for molecular biology studies because: a. it has a small genome. b. it reproduces rapidly. c. mutants can easily be i...

Campbell Biology Chapter 17 Test Questions with Answers alternative RNA splicing - Answer-A type of eukaryotic gene regulation at the RNA-processing level in which different mRNA molecules are produced from the same primary transcript, depending on which RNA segments are treated as exons and which as introns Beadle and Tatum - Answer-Exposed bread mold to X-rays, creating mutants. Showed that each gene encodes a particular substance ("one gene, one enzyme" concept, later restated "one gen...