Question

one way to identify protein - coding genes is to search a dna sequence for open reading frames—long sequences of 100 or more codons that lack a stop codon. but this process can be made more difficult by the fact that in higher eukaryotes, genes can stretch over tens of thousands of nucleotide pairs, much of which contain introns. to help find the exons buried within this noise, computers can be used to search for other distinctive features that mark the presence of a protein - coding gene. which is not considered a feature characteristic of a protein - coding gene? choose one: a. gene regulatory sequences located upstream b. presence of an initiation codon c. conservation with coding sequences of other organisms d. splicing sequences that mark intron - exon boundaries e. presence of mobile genetic elements

Explanation:

Protein - coding genes have gene regulatory sequences upstream that control gene expression, an initiation codon (start codon) to begin translation, conservation with coding sequences of other organisms due to shared evolutionary history, and splicing sequences at intron - exon boundaries for proper RNA processing. Mobile genetic elements are not characteristic features of protein - coding genes. They are DNA sequences that can move around within the genome and are not directly related to the basic function of a protein - coding gene.

Answer:

E. presence of mobile genetic elements