A boar with spots and pink eyes is bred with a sow with no spots and brown eyes. All of the many piglets produced have spots. About half have pink eyes and the rest have brown eyes.
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Spots = S, no spots = s
P = pink eyes, p = brown
boar = SSPp (homozygous for Spots, heterozygous for Pink eyes)
sow = sspp (homozygous for no spots and brown eyes)
P = pink eyes, p = brown
boar = SSPp (homozygous for Spots, heterozygous for Pink eyes)
sow = sspp (homozygous for no spots and brown eyes)