Couple have a miscarriage (ig) and want a child, so they go to this famous doctor/scientist and they live on a cruise for the treatment and it shocks them that they can choose their childs features

[SoberWitch]

Sorry for the bad description

[Daisy]

SoberWitch, what do you mean by "miscarriage (ig)"?

[Kris]

SoberWitch, what's the genre (which we need to add to the topic header) - e.g., adult science fiction, thriller, etc.?

What types of features can they choose for their child/ baby?

Around what year did you read this book? A range of years is fine.

What are the main characters' jobs? Where do they live?