Incubation Death diagnosis…

[Marychickyquails]

Out of 7 eggs one didn’t peep or wiggle. When opening the egg for diagnosis I found a dead chick with an underbite… does anybody know what went wrong? Or is it genetics? They’re shipped eggs. Pictures below

 

[nuthatched]

Probably couldn't pip and zip properly with a black like that, that bad of malformation is likely genetics.

 

[Marychickyquails]

Probably couldn't pip and zip properly with a black like that, that bad of malformation is likely genetics.

Thank you for answering