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Title: A male hemophilic wants to marry and have children but is concerned... Post by: momof1 on Sep 30, 2010 Hemophilia is an X-linked recessive disorder. A male hemophilic wants to marry and have children but is concerned about passing this disease to the offspring. Conduct three crosses with the three possible genotypes present in women listing the F1 phenotypes, genotypes and their corresponding ratios. Which mate is clearly the best? Will all of his potential grandchildren be safe from this disease even with the best mate?
Title: A male hemophilic wants to marry and have children but is concerned... Post by: bio_man on Sep 30, 2010 Define the symbols:
XH - normal Xh - hemophilia Y0 - does not have the allele So, according to this, the man is: XhY0 Woman one: XhXh HEMOPHILIAC Woman two: XHXh NOT HEMOPHILIAC Woman Three: XHXH NOT HEMOPHILIAC I will show you woman one mated to this man who is hemophiliac. Xh Y0 Xh XhXh XhY0 Xh XhXh XhY0 All will be Hemophilic; 2 boys and 2 girls. Remember, if you have at least 1 normal gene, you will show normality, not hemophiliac! Title: A male hemophilic wants to marry and have children but is concerned... Post by: momof1 on Oct 1, 2010 Thank you very much. Great expaination.
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