What is the best definition of a eukaryotic cell?

Eukaryotes or eukaryotic cells have a cell nucleus and organelles enclosed within membranes. Eukaryotes can be unicellular or multicellular. Most complex life forms are eukaryotes. In contrast, prokaryotes don’t have a nucleus and don’t have things like mitochondria or chloroplasts. Their DNA, proteins, and metabolites swim freely in the cytoplasm and not enclosed in organelles.

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

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