w/ hemophilia A which is a recessive X-linked disease. Neither parent has the disease. Couple # 2 had a normal son despite the fact that the father has hemophilia A. The 2 couples sued the hospital in court claiming that a careless staff member swapped their babies at birth. Evaluate their claim based on the genetic data presented.
2007-02-07 17:28:18 · 5 answers · asked by ruby 2 in Science & Mathematics ➔ Biology
Swapping babies can not be proven by this information.
Sons get X-linked traits from their mothers, not their fathers. The father always passes a Y to a son.
Mom #1 is most likely a carrier for hemophilia XH Xh so she does not show signs of hemophilia, but she can give that one recessive allele to her son.
Dad #2 did not give hemophilia to any son because he gives a son a Y chromosome. Dad #2 could give a copy of the allele to a daughter, but a daughter would also have to get the hemophilia allele from Mom to have the disease.
2007-02-07 17:35:15 · answer #1 · answered by ecolink 7 · 1⤊ 0⤋
No reason for the lawsuit. It's recessive; healthy parents can have a sick child. It is also an X-linked disease, so for the child of Couple #2 to be sick because of the father, the child would have to be a girl. The only way a boy could inherit the disease is from his mother, the one who gave him his X chromosome. Plus, both parents would have to carry the gene. If only the father carries the gene, the child will be healthy.
2007-02-08 01:37:40 · answer #2 · answered by bisous148 4 · 0⤊ 0⤋
Ahh. I spent quite a few minutes typing up an answer but - not to be rude or anything - the question sounded quite textbookish so you MIGHT be asking a question for some type of school work.
2007-02-08 01:48:32 · answer #3 · answered by Sharon ! 2 · 0⤊ 0⤋
They need to do a paternity test!
2007-02-08 01:36:27 · answer #4 · answered by Gemini Girl 4 · 0⤊ 0⤋
the baby did something behind the scene.....
2007-02-08 01:40:44 · answer #5 · answered by jhust b 3 · 0⤊ 0⤋