Chapter 12: DNA And Rna

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1.  Sections of RNA molocules that are not involved in coding for proteins
2.  Protein that DNA wraps around in eukaryotic chromosomes
3.  Virus that infects bacteria
4.  A(n) ______________, is made up of three parts: a deoxyribose sugar, a phosphate group, and a nitrogeneous base.
5.  Process in which one strain of bacteria changes into another one
6.  After introns have been cut out of RNA molocules, the remaining peices called _________ are spliced together.
7.  The principal enzyme involved in DNA replication
8.  Region of DNA that indicates to an enzyme where to bind to make RNA
9.  A group of genes that operate together
10.  When the lac repressor protein binds to the ___________________, the lac operon is turned off.
11.  Three bases on the tRNA molocule are that complementary to one of the mRNA codons are called a(n) _____________.
12.  Three nucleotides that specify a single amino acid to be added to a polypeptide
13.  Eukaryotic chromoromes contain both DNA and protein tightly packed together to form a substance called ____________.
14.  A series of genes, called the __________________, controls the development of organs and tissues in various parts of an embryo.
15.  Condition in which an organism has extra sets of chromosomes
16.  The enzyme that uses one strand of DNA as a template to assemble nucleotides into a strand of RNA is called ________________.
17.  Process in which DNA makes a copy of itself
18.  The principle of ____________ states that hydrogenbonds can form only between certain bases in DNA.
19.  The decoding of an mRNA message into a protein is known as __________.
20.  During the process of _____________, RNA molocules are produced by copying part of the nucleotide sequence of DNA into a complementary sequence in RNA.
21.  Process in which cells become specialized in structure and function
22.  A change in the genetic material
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