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.
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.