Bis101_Quiros_Fall2000_Midterm1

Bis101_Quiros_Fall2000_Midterm1 - NAME Last First ID...

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NAME: ID# Last, First BIS101-2 Fall 2000 MIDTERM 1 SHOW ALL WORK TO GET FULL CREDIT . Authorization for Public Distribution of Graded Examination and grade posting by 6 last digits of SS# I,____________________________ , ID#__________________________ authorize that after this exam is graded, it can be distributed in class or placed in a holding bin, labeled BIS 101-02, on the third floor of Briggs Hall. Also I authorize posting of my grade in the same location by the 6 last digits of my ID# 1
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MIDTERM I QUESTION VALUE SCORE 1 10 2 6 3 8 4 10 5 10 6 14 7 10 8 10 9 12 10 10 TOTAL 100 2
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1. Define the following terms (10 points total). (a). (1 pt) Gene : Basic unit of heredity, made up of DNA (b). (1 pt) Allele Alternate form of a gene (c). (1 pt) Locus Physical location of a gene on a chromosome (d). (1 pt) Penetrance % individuals of given genotypes expressing expected phenotype (e). (1 pt) Hemizygote Diploid individuals having a single allele for a gene instead of two (f). (1 pt) Pericentric inversion Inverted chromosome segment including the centromere (g). (1 pt) Monoploid individual Individual carrying a single genome (h). (1 pt) Pachytene Sub-stage of meiosis I where the chromosomes are synapsed (i). (1 pt) Genome A single set of chromosomes (j). (1 pt) Nullisomic Individual missing a pair of homologous chromosomes 3
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2) What is the probability of obtaining the following progeny by selfing an individual of genotype AaBBCcddEeFfgg : (6) a) Phenotype A_ BB C_ dd E_ ff gg (2) (3/4)(1)(3/4)(1)(3/4)(1/4)(1)= 27/256 b) Genotype Aa BB Cc dd Ee ff gg (2) (1/2)(1)(1/2)(1)(1/2)(1/4)(1)= 1/32 c) How many genotypes would you obtain when crossing the plant AaBBCcddEeFfgg : to another one of genotype AabbccDdeeFfgg ? (2) 3 x 1 x 2 x 2 x 2 x 3 x 1=72 3) A man of blood group AB marries a woman of blood group B whose father was group O. What is the probability that: (8 total)
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