# x2ques - Questions from previous Exam 2 material BioS 101...

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Questions from previous Exam 2 material BioS 101 Lecture 1 Segregation of Alleles In the F2 generation Mendel found that about 3/4ths of the peas were YELLOW and ¼ were GREEN. Mendel allowed the F2 peas to self and form an F3 generation. What proportion of the YELLOW F2 peas do you expect to have ALL YELLOW progeny? a. none b. ¼ c. 1/3 d. ½ e. 2/3 If each progeny has a 3/4ths chance of being YELLOW and a ¼ chance of being GREEN, what is the probability that a pod with 3 peas has first two GREEN and the last one YELLOW? a. none b. 1/64 c. 3/64 d. 9/64 e. 3/16 Lecture 2 Independent Assortment If you expect 3/4ths of the progeny to be PURPLE and ¼ to be WHITE, calculate the Chi-Squared value, if the numbers observed were 80 PURPLE and 20 WHITE. A. 0.75 B. 1.33 C. 2.33 D. 3.33 E. 3.84 Consider gamete formation in an individual with the Ab/aB genotype. If assortment is INDEPENDENT,

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## This note was uploaded on 04/11/2010 for the course BIOS 101 taught by Professor Molumby during the Spring '08 term at Ill. Chicago.

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x2ques - Questions from previous Exam 2 material BioS 101...

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