Exam 12: Genes Structure, Replication, and Expression

Split or interrupted genes have been found in eukaryotes but not in prokaryotes.

The __________ describes the specific set of genes an organism possesses.

Messenger RNA molecules that direct the synthesis of more than one polypeptide are said to be __________.

How many different termination codons are used in translation?

The genetic code is usually translated in a nonoverlapping fashion.

The noncoding sequences located between the start codon and the stop codon in interrupted genes are called introns.

In eukaryotes a so-called cap consisting of __________ is attached to the 5' end of the molecule during posttranscriptional modification of hnRNA to produce functional mRNA.

The __________ is the collection of characteristics of an organism that an investigator observes.

When a DNA molecule is replicated, the daughter molecules contain one strand of parental DNA and one strand of newly synthesized DNA; this is called __________ replication.

mRNA molecules have a nontranslated sequence called the __________ , which is located downstream of the termination codon.

DNA functions as a storage molecule, holding genetic information for the lifetime of a cellular organism and allowing that information to be duplicated and passed on to its progeny.

Which of the following is in the coding region of a gene?

The genetic code is translated in groups of __________ bases

Which of the following is true about the structure of DNA?

The __________ reaction sequentially links adjacent amino acids into the growing polypeptide chain.

Because of its larger size, the replication rate of eukaryotic genomes is significantly faster than the replication rate of prokaryotic genomes.

Posttranscriptional modifications that yield eukaryotic mRNAs include which of the following?

The genetic information in DNA is divided into units called

What is the minimum number of aminoacyl-tRNA synthetase enzymes needed to attach amino acids to all the various tRNA molecules?

A complex consisting of a single mRNA molecule with several ribosomes is called a