IPA: /ˌɔːtəˈsɒməli/
KK: /ˌɔːtəˈsɒməli/
In a manner related to autosomes, which are chromosomes that are not sex chromosomes.
The trait was inherited autosomally, affecting both males and females equally.
Autosomally → It is formed from "auto-" (from Greek "αὐτός" meaning self) and "somal" (from Latin "somatus" meaning body). The word refers to something that is related to or occurring in the body itself, particularly in genetics, where it pertains to autosomes, which are chromosomes that are not sex chromosomes.
Think of 'self' ('auto-') relating to the 'body' ('somal') — this helps you remember that 'autosomally' refers to something that occurs in the body itself.
No commonly confused words.