Do you keep the ability Mummy after you Mega Evolve?

Question

Situation:

Kangaskhan hits a Cofagrigus and gets Mummy

Question:

After he Mega evolves, does he keep Mummy or gets Parental Bond?

Answer 1

She would get Parental Bond

Kangaskhan is only female, so yeah. Anyway, the ability changes entirely after Mega Evolution so the new ability gained by Kangaskhan would change into Parental Bond after Mega Evolution.
In a nutshell: The Pokemon's ability will change to its Mega Evolution ability after Mega Evolution
Lots of "Mega Evolution in there, isn't it?
Hope this helps!