10. Practice questions for Exam 1 key

10. Practice questions for Exam 1 key - 1(3 pts Four of the...

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1. (3 pts) Four of the five choices below are caused by recessive genes, select the exception. 1) Huntington’s disease 2) cystic fibrosis 3) albinism 4) hemophilia 5) sickle cell disease 2. (3 pts) In the 1940’s two individuals with achondroplasia met in a show in which they were performing. They married and had many children over the years. What fraction of their children would you expect were also born with achondroplasia? 1) 0 2) 1/4 3) 1/3 4) 2/3 5) 1/2 3. (3 pts) The total number of different alleles for the ABO blood system is: 1) 3 2) 4 3) 6 4) 9 5) undetermined 4. (3 pts) Robbie and Rachel meet at Bub’s one night over a beer. They begin talking and find out that they each have a brother that is red/green colorblind, although they and their parents all see colors normally. Coincidently, they are both biology majors who have taken Biol 50. They recall that this is an x-linked recessive disorder. They decide to determine the chance that if they married, that they would have a child that was red-green colorblind. The probability that their first born child will be colorblind is what? 1) 0
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10. Practice questions for Exam 1 key - 1(3 pts Four of the...

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