Bio+97+Worksheet+4+Key

Bio+97+Worksheet+4+Key - Bio 97 Worksheet #4 1) A female...

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Bio 97 Worksheet #4 1) A female affected with the disease “ Bruin-apathy ” mates with an unaffected male and has an affected daughter. Which type(s) of inheritance can be ruled out for “ Bruin-apathy ”? A) Autosomal dominant B) X-linked dominant C) Autosomal recessive D) X-linked recessive E) A, B and D 2) The single gene that determines the “ ESPN-addict recessive trait is one of the few genes that reside on both the X and Y chromosomes (two copies of the ESPN-addict gene are in every individual). Professor Yi, an “ ESPN-addict ” male, mates with a normal female and has a normal son. Professor Yi’s normal son mates with an ESPN-addict female and has many sons (Professor Yi’s grandsons). Roughly, what percent of Professor Yi’s grandsons will be ESPN-addicts ? A) 0% B) 25% C) 50% D) 75% E) 100% 3) The following pedigree shows the segregation of two different autosomal recessive traits (an individual shows the trait if homozygous recessive). Use A and a to designate the dominant and recessive alleles of locus A for trait “A”. Use B and b to designate the dominant and recessive alleles of locus B for trait “B”. (i) List ALL of the possible genotypes for individual 3 (1 point). (ii) List
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This note was uploaded on 12/01/2010 for the course BIO SCI Bio Sci 97 taught by Professor Evaharris during the Winter '10 term at UC Irvine.

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Bio+97+Worksheet+4+Key - Bio 97 Worksheet #4 1) A female...

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