ðə dʒˈiːn ðæt ɛŋkˈoʊdz fɔːɹ ˌeɪtʃˌeɪˈɛl spˈænz ɐ ɹˈʌfli twˈɛnti fˈaɪv kˌeɪbˈiː ænd kənsˈɪsts ʌv twˈɛnti wˈʌn ɛɡzˈɑːnz loʊkˈeɪɾᵻd æt ðə twˈɛlv kjˈuː twˈɛnti tˈuːkjˈuː twˈɛnti fˈoːɹ.wˈʌn pəzˈɪʃən ʌv hjˈuːmən kɹˈoʊməsˌoʊm twˈɛlv.
The gene that encodes for HAL spans a roughly 25 kb and consists of 21 exons located at the 12q22-q24.1 position of human chromosome 12.