Studied by 1 personRosalind Franklin
________ used a technique called X- ray diffraction to get information about the structure of the DNA molecule.
thymine
DNA has four kinds of nitrogenous bases: adenine, guanine, cytosine, and ________.
Franklins X ray
The clues in ________ pattern allowed Watson and Crick to build a model that explained the specific structure and properties of DNA.
DNA
________ is a nucleic acid made up of nucleotides joined into long strands or chains by covalent bonds.
Cells
________ use a special enzyme called telomerase that makes it less likely that genes will be damaged or lost during replication of rapidly dividing ________.
Erwin Chargaff
________ and Rosalind Franklin both helped solve the puzzle of the structure of DNA.
Crick
Watson and ________ discovered that hydrogen bonds could form between certain nitrogenous bases.
Nucleotides
The building blocks of nucleic acids
Hershey
________ and Chase used a bacteriophage that had a DNA core and a protein coat to find out which part of the virus- the protein coat or the DNA core- entered bacterial cells.
eukaryotic cells
In ________, replication may begin in hundreds of places on the DNA molecule.
hydrogen bonds
Though ________ are fairly weak forces, they have just enough force to hold the two strands of DNA together.
DNA polymerase
The principal enzyme involved in DNA replication
DNA
The ________ that makes up genes must be capable of storing, copying, and passing on the genetic information in a cell.
Crick
Watson and ________ determined that DNA has the structure of a double helix that looks like a twisted ladder.
Nucleotides are the building blocks of nucleic acids and are made up of three basic parts
a 5-carbon sugar called deoxyribose, a phosphate group, and a nitrogenous base
DNA has four kinds of nitrogenous bases
adenine, guanine, cytosine, and thymine
These bonds would form only between certain base pairs
adenine paired with thymine, and guanine paired with cytosine
Transformation
A process in which one strain of bacteria is changed by a gene or genes from another strain of bacteria
Bacteriophage
A kind of virus that infects bacteria
Base pairing
The principle that bonds in DNA can form only between adenine and thymine and between guanine and cytosine
Replication
The process of copying DNA prior to cell division
Telomere
The repetitive DNA at the end of a eukaryotic chromosome
Viruses
Tiny, nonliving particles that can infect living cells
Note 
Flashcard (38)