What are the chances that their next child will be daughter

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In humans, let's say that having a free earlobe is dominant to having an attached earlobe, and that hairline is an X-linked trait whereby a normal hairline is dominant over a widow's peak hairline. Two parents with free earlobes and normal hairlines have a son who has an attached earlobe and a widow's peak. What are the chances that their next child will be a daughter with attached earlobes and who is a carrier for the widow's peak trait?

Reference no: EM13110761

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