I think the suggestion is that a spreadsheet is the not the right tool for the job.

There is very likely value in dedicated genetics-specific software, even in the form of an excel add-on.

[edit] Here's one, and it's free: https://biology-assets.anu.edu.au/GenAlEx/Welcome.html - so maybe this change from microsoft was necessary

maybe some statistical analysis software is more useful - for e.g. minitab