Written HW3 KEY Spr12

Written HW3 KEY Spr12 - BSC2011 Written Homework...

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Unformatted text preview: BSC2011 Written Homework 3(Genetics) Spring 2012 Name, please: 2 Please show all work (parental genotypes, Punnett squares, multiplication, addition, “thought process”, etc.) and not simply an answer to receive for full credit. Please also circle your final answer to each part. 1. If you roll a pair of dice at the same time, what chance do you have of rolling a combined total of seven? ' #1 4; #2. d“ ‘ Vb x‘lb ‘-‘- 73¢ 5 e. 2. = 2.. i 5 = We x'lb = ’/86 [r5 3 iv ‘1' = ‘lar‘lb = ‘/3(o Ll- ¢L V3 :: Yeast/it {st/314 (a t; I = '/M‘/9 “hi: 1 a b a yaw/0:199 _ ya (47/ 5‘9 2. (a) If a woman who is a carrier for hemophilia (an X—linked trait) and her husband, whose mother had hemophilia, 9% (b) If they have a daughter, what are her chances of having hemophilia? 6,9 ‘/2 j W“ °i' 3. 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? (show Punnetr squares) For“) > 1’3 (mm) XNCMYM\ > X“(wnow's pat) pawns must/£2 FicXNX“ ti, F‘F XMY . [A 4. A type AB+ man and a type AB— woman have a type B- daughter. What is the probability that their next child will be a type A+ daughter? [Show Punnett squares) ' ' man‘ IAIBRN’M f°m“‘1:“IBRh‘ Rh“ 5. (a) If a couple has children with Type AB and Type 0 blood, what are the parenph _e_not ypeg? (show siblings’ genotypes and explain your reasoning)“. I‘ ‘ . _ “ a (lack pmd’ musk haw/aw L We: make/4n, n CWMC O) t mm {244sz Mutt“ cmdwfl mat “In M—tp’flh/ ms W . 7’0)“ wwwmuskcmmbflu'jmw 38:11” PM 0W (b) What are the chances that th - 2’ ' ' ‘ - a Type A daughter? [Show Punnett square , ...
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Written HW3 KEY Spr12 - BSC2011 Written Homework...

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