. Carlos and Maria feel blessed and are ecstatic to have two healthy babies. Within the...

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. Carlos and Maria feel blessed and are ecstatic to havetwo healthy babies. Within the first hour, the babies have beencleaned and measured and their heels pricked for blood samples.These initial blood tests are to assess for PKU, TH levels, cysticfibrosis, and several other metabolic disorders. To their surprise,their new daughter tests positive for PKU. Neither carlos nor Mariahave PKU. Thankfully, their son tests negative for PKU. But as theyare discussing genetic testing, Maria remembers that her father wascolor blind. She wonders whether that means her son will also becolor blind. Carlos and Maria are so happy with their new twinsthat they are thinking about trying to have more children, maybe ina few years. a) What is the % chance their son will also have PKU?b) It wonâ€™t be possible to determine yet, but what are the %chances that Maria and Carlosâ€™s son will be color blind? Explainbriefly your reasoning. c) Having had one boy and a girl, what areMaria and Carloâ€™s chances of having another boy? Will the time offertilization influence their chances of having a boy?

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Phenylketonuria or PKU is an autosomal recessive trait If the father and mother are both unaffected it means they both were carriers of PKU which means they both had one recessive allele which is the diseased one and another normal dominant allele In See Answer

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