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Question: A man and a woman who each have wild-type phenotypes have a son with Klinefelter syndrome (XXY) who has hemophilia. What are the genotypes of the parents? Did nondisjunction occur in the father or the mother?

Question: Cancer cells from the person suffering from malignant melanoma are analyzed and found to have an elevated ability to bind to laminin; they also secrete much higher than normal levels of a certain proteolytic enzyme activity .how would these differences from normal ,control cells promote metastasis of these cancer cells?

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Category:- Biology
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