Frederick griffith - Study guides, Class notes & Summaries

In 1928, __________ was surprised to find that when he killed pathogenic bacteria, then mixed the bacterial remains with living harmless bacteria, some living bacterial cells became pathogenic. - Frederick Griffith In 1952, ___________ used bacteriophages to show that DNA is the genetic material of T2, a virus that infects the bacterium Escherichia coli (E. coli). - Hershey-Chase __________ are viruses that infect bacterial cells. - Bacteriophages ______ discovered the relationships bet...

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...

People to Know - AP Biology Exam Questions and Answers Gregor Mendel Monk who grew up in Austria, experimented with garden peas in 1857 to study inheritance, documented "particulate mechanism", came up with laws of independent assortment and segregation. Thomas Hunt Morgan Came up with first solid evidence associating a specific gene with a specific chromosome by working with various varieties of Drosophila; invented notation for symbolizing alleles; discovered sex-linked trait of whit...

RNA nucleotide base pairings - Cytosine (C) pairs to Guanine (G) Adenine (A) pairs to Uracil (U) DNA Sructure - because of this complementary base pairing, the order of the bases in one strand determines the order of the bases in the other strand Griffith's Experiment - in the 1920's, Frederick Griffith worked with two strains of Streptococcus pneumoniae bacteria. It was discovered that DNA was transmitted between the toxic and the harmless bacteria. DNA - -deoxyribonucleic acid -store...

Gregor Mendel - Austrian Monk, developed fundamental laws of heredity using peas True-breeding - Means the offspring are like the parents, not hybrids Homozygous - Means the alleles/traits are identical, either both dominant or both recessive Cystic Fibrosis - Affects Caucasians in US, salty sweat, mucus in bronchial tubes and pancreatic ducts, failure of chloride ions to pass through the membrane, on chromosome 7, life expectancy is 35 years Genotype - Is the alleles received at birth, re...

MIBO 3500E Exam 2 Q & A

The drug AZT was one of the first drugs used to treat HIV. Which of the following drug actions would prevent the spread of HIV without harming the host cell? prevention of the formation of glycoproteins inhibition of reverse transcriptase inhibition of DNA polymerase destruction of amino acids that are vital to viral protein synthesis - correct answer inhibition of reverse transcriptase A virus infects a cell and randomly inserts many ...

Molecular Genetics Exam I | Questions & Answers (100% Correct) Molecular Genetics Exam I | Questions & Answers (100% Correct) Warren Weaver - ANSWER - -termed molecular biology -1938 -figured out how genes and proteins were working together -not a technique, but an approach molecular biology - ANSWER - -branch of biology that deals with the molecular basis of biological activity Lodolce definition of molecular biology - ANSWER - -the study of the tiny sized (molecular) tools used by...

AP Biology Unit 6 Test Verified Solutions What enhances the expression of a gene? ️the attachment of RNA polymerase to DNA Describe what happens when the lactose operon is turned on and transcribing. ️Allolactose or lactose binds to and changes the shape of the repressor. Genes A,B,C, and D are located on the same chromosome. Testcrosses show that the recombination frequency between A and B is 36% and between A and C is 23%. The recombination frequency between C and D is 5% and b...

People to Know - AP Biology Exam Questions and Answers Gregor Mendel Monk who grew up in Austria, experimented with garden peas in 1857 to study inheritance, documented "particulate mechanism", came up with laws of independent assortment and segregation. Thomas Hunt Morgan Came up with first solid evidence associating a specific gene with a specific chromosome by working with various varieties of Drosophila; invented notation for symbolizing alleles; discovered sex-linked trait of whit...