Organelles have their own genetic systems. These genetic system are primarily prokaryotic in nature in
contrast to nucleus. nucleus is eukaryotic in nature.
1. DNA signals in RNA-coding genes
blue: promoter- region immediately upstream of transcription unit.
promoter does not get transcribed because transcription starts after the promoter
yellow: SD box (TATA) - within promoter
green: Start codon right after 5' UTR *#
light blue: coding region *#
red: stop codon- right before 3' UTR * no tRNA - no translated
pink: transcription sequence - after stop codon* no translated
* get transcribed # translated
2. DNA sequence of anticodon in tRNA gene, given the codon
tRNA is the molecule that delivers the amino acid.
tRNA molecule has a cloverleaf structure because of hydrogen bonding
the anticondon is located on the anticodon arm and the amino acid is covalently to adenine