14.1
What Are the Characteristics of the
Eukaryotic Genome? 307
Model organisms reveal the characteristics
of eukaryotic genomes 308
Eukaryotic genomes contain many repetitive
sequences 311
14.2
What Are the Characteristics of Eukaryotic
Genes? 313
Protein-coding genes contain noncoding
sequences 313
Gene families are important in evolution
and cell specialization 315
14.3 How Are
Eukaryotic Gene Transcripts Processed?
316
The primary transcript of a protein-coding
gene is modified at both ends 316
Splicing removes introns from the
primary transcript 316
14.4
How Is Eukaryotic Gene Transcription
Regulated? 318
Specific genes can be selectively
transcribed 318
Gene expression can be regulated by
changes in chromatin structure 322
Selective gene amplification results
in more templates for transcription
324
14.5
How Is Eukaryotic Gene Expression
Regulated After Transcription? 324
Different mRNAs can be made from the
same gene by alternative splicing
324
The stability of mRNA can be regulated
325
Small RNAs can break down mRNAs 325
RNA can be edited to change the encoded
protein 326
14.6
How Is Gene Expression Controlled
During and After Translation? 326
The initiation and extent of translation
can be regulated 326
Posttranslational controls regulate
the longevity of proteins 327
