Mutants - Study guides, Class notes & Summaries

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...

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...

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...

FAU Dr. Brooks - Biological Principles - Unit 3 Comprehensive Study Guide 2024 with complete Solutions What is the cell theory? - Answer- All organisms are made come from cells and are made up of cells Cells must reproduce for what 2 reasons? - Answer- Cells must reproduce either to perpetuate the species or create a multi-celled individual Cell reproduction involves which two processes? - Answer- Cell reproduction involves mitosis (duplication and division of the nucleus) and cytokinesi...

Che 4220, Genetic Engineering Exam Questions With Answers 2023 This Hungarian engineer coined the term biotechnology in 1917 - ANS Karl Ereky What type of biotechnology did Karl Ereky work on in his time? - ANS He used sugar beets as food to help mass produce pigs for food What are some other things the term biotechnology was used to describe? - ANS Referred to in industrial fermentation and efficiency in the workplace (ergonomics) The application of scientific and engineering pr...

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...

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-...

CMMB 403 Tutorial Quiz 2What 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 knockout or induce a mutation in that gene - treat adults with mutagen to i...

Gregor Mendel (1865-1866) - ANSWER- Using pea plants he observed what he called the Laws of Heredity: 1. Law of Segregation - there is one gene per sex cell, so we have to genes, one from each parent. 2. Law of Independent Assortment - traits are inherited independently, found to be untrue for all (linkage). 3. Law of Dominance - there are recessive and dominant traits, not all of them. Thomas Morgan (1910) - ANSWER- Chromosome Theory of Inheritance: 1. Sex chromosomes 2. Chromosome pair...