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Genetics 2
Genetics 2
31
Agriculture
Undergraduate 1
09/22/2009

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Term
A gene is a sequence of
Definition
DNA
Term
DNA is used to make:
Definition
RNA
Term
RNA is used to make
Definition
protein
Term
DNA contains information. DNA to RNA to protein=
Definition
information transfer
Term
Each nucleotide has 3 parts-
Definition
a sugar, an acid and a base
Term
4 different bases in a nucleotide
Definition
adenine, guanine, cytosine, and thymine
Term
Base pairs
Definition

A-T

 

C-G

Term
DNA replication
Definition
An enzyme, DNA polymerase, catalyzes in the replication process.
Term
Central Dogma
Definition
DNA --> to RNA --> to protein
Term
DNA is packaged into
Definition
chromosomes
Term
Transcription
Definition
molecules of RNA are produced on the DNA templates in the nuleus. A base sequence in DNA serves as a pattern for assemblin a strand of messenger (m)RNA
Term
Translation
Definition
RNA molecules shipped from the nucleus to the cytoplasm to be used in polypeptide assembly. A certain type of RNA directs the linkage of one amino acide after another, according to the sequence specified on the mRNA.
Term
In transcription, what do genes do?
Definition
a gene provides information for the sysnthesis of mRNA
Term
Genes in translation:
Definition
the linear sequence of nucleotides in RNA determines the linear sequence of amino acids in a protein.
Term
What is the end product of translation?
Definition
a protein
Term
What is a codon?
Definition
tri-nucleotide sequences
Term
What is the promary structure of proteins?
Definition
Amino Acids
Term
Proteins are...
Definition
polymers of amino acids
Term
Every three basis on an mRNA molecule specifies an amino acid to be included into a growing polypeptide chain. This is called the
Definition
genetic code
Term
How many triplets of a genetic code are there?
Definition
64
Term
How many different amino acids are in our proteins?
Definition
20
Term
Proteins
Definition
linear, unbranched chains of amino acids.
Term
Mutations result from
Definition

1. Mistakes in DNA replication

2. Chemical or physical agents such as radiation or UV light

Term
Most damage to DNA...
Definition
is immediately repaired.
Term
Mutations that persist in somatic cells...
Definition
can cause problems for the individual carrying the mutation but are not passed on to progeny.
Term
Genome
Definition
the complete genetic material of an entire organism
Term
Redi's Experiment
Definition
Maggots are not generated as meat decays, derived from "droppings" of flies.
Term
Needham's Experiment
Definition
microorganisms found in boiled mutton broth arise spontaneously from the broth
Term
Spallanzani's experiment
Definition
Microonisms found in broth do not arise spontaneously, enter from the air.
Term
Pasteur's Experiment
Definition
exclusion from microorganisms from boiled broth and not the exclusion of oxygen, prevent growth of microorganisms in boiled broth.
Term
The two strands of the double helix
Definition
run in opposite directions. They are complementary.
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