BIO 340: Genetics Exam III (Mangone) 118 Q&A/ Already Graded A+.| 2025
LATEST UPDATED
What is a gene? - (answers)Fundamental unit of inheritance
Origin of the word "gene" - (answers)greek: genos (origin), and genesis (birth)
Gregor Mendel Experiment - (answers)-pea plants
-traits do not blend in offspring
-traits are discreet, distinct entities
Thomas Hunt Morgan Experiment - (answers)-genes are arranged linearly
-crossing over is proportional to gene distance
Frederick Griffith's Transformation Experiment - (answers)-heat-killed virulent strain
transformed avirulent strain into virulent
-supported bacterial transformation of form and function
-coined phenomenon "transformation"
-*a chemical component of cells could introduce new, heritable trait to cell*
Beadle & Tatum - (answers)-mutations = defects
-1 gene = 1 enzyme (polypeptide)
Aver, McLeod, & McCarty - (answers)-*DNA is transforming factor*
-used test tubes to rule out other factors (protein, etc)
-taking out DNA did not change new cells, so DNA was the transferring factor
, Hershey-Chase Experiment - (answers)-bacteriophages transform cells by inserting DNA
-signaled DNA with radioactive phosphorus in one test and proteins (sulfur) in another, the cells
with radioactive properties would reveal the transferring mechanism
-*DNA is genetic material*
Erwin Chargaff - (answers)-A is proportional to T
-C is proportional to G
-A+T does not equal G+C
What are nucleotides and what are they made of? - (answers)-building blocks of DNA
-made of 1 pentose sugar, 1 nitrogenous base, 1 phosphate group
-phosphodisyer bond
Purines - (answers)-Adenine and Guanine
-form 2 hydrogen bonds
Pyrimidines - (answers)-Thymine, Cytosine, Uracil (RNA)
-form 3 hydrogen bonds
Watson & Crick - (answers)-*DNA is right-handed double helix with antiparallel strands*
-composed of 10 stacked bases per turn
-minor groove is 12 Å (1.2 nm)
-major groove is 22 Å (2.2 nm)
-complete turn is 34 Å (3.4 nm)
Fiers (1971) - (answers)first gene and sequence cloned
LATEST UPDATED
What is a gene? - (answers)Fundamental unit of inheritance
Origin of the word "gene" - (answers)greek: genos (origin), and genesis (birth)
Gregor Mendel Experiment - (answers)-pea plants
-traits do not blend in offspring
-traits are discreet, distinct entities
Thomas Hunt Morgan Experiment - (answers)-genes are arranged linearly
-crossing over is proportional to gene distance
Frederick Griffith's Transformation Experiment - (answers)-heat-killed virulent strain
transformed avirulent strain into virulent
-supported bacterial transformation of form and function
-coined phenomenon "transformation"
-*a chemical component of cells could introduce new, heritable trait to cell*
Beadle & Tatum - (answers)-mutations = defects
-1 gene = 1 enzyme (polypeptide)
Aver, McLeod, & McCarty - (answers)-*DNA is transforming factor*
-used test tubes to rule out other factors (protein, etc)
-taking out DNA did not change new cells, so DNA was the transferring factor
, Hershey-Chase Experiment - (answers)-bacteriophages transform cells by inserting DNA
-signaled DNA with radioactive phosphorus in one test and proteins (sulfur) in another, the cells
with radioactive properties would reveal the transferring mechanism
-*DNA is genetic material*
Erwin Chargaff - (answers)-A is proportional to T
-C is proportional to G
-A+T does not equal G+C
What are nucleotides and what are they made of? - (answers)-building blocks of DNA
-made of 1 pentose sugar, 1 nitrogenous base, 1 phosphate group
-phosphodisyer bond
Purines - (answers)-Adenine and Guanine
-form 2 hydrogen bonds
Pyrimidines - (answers)-Thymine, Cytosine, Uracil (RNA)
-form 3 hydrogen bonds
Watson & Crick - (answers)-*DNA is right-handed double helix with antiparallel strands*
-composed of 10 stacked bases per turn
-minor groove is 12 Å (1.2 nm)
-major groove is 22 Å (2.2 nm)
-complete turn is 34 Å (3.4 nm)
Fiers (1971) - (answers)first gene and sequence cloned
