Why is It More Difficult to Identify Eukaryotic Genes Than

Question

Why is it more difficult to identify eukaryotic genes than prokaryotic genes?
A)because in eukaryotes the proteins are larger than in prokaryotes
B)because in eukaryotes the coding portions of genes are shorter than in prokaryotes
C)because in eukaryotes there are no start codons
D)because in eukaryotes there are introns
E)because in eukaryotes there are more short tandem repeats

Accepted Answer

Eukaryotic genes contain introns, which are non-coding regions of DNA that interrupt the coding regions (exons). This makes it more difficult to identify the actual coding regions of the gene. Prokaryotic genes, on the other hand, typically do not contain introns and have a simpler gene structure, making them easier to identify.