Wright BIO 2110 - BIO2110_exam3_fall2014 (14 pages)

Previewing pages 1, 2, 3, 4, 5 of 14 page document View the full content.
View Full Document

BIO2110_exam3_fall2014



Previewing pages 1, 2, 3, 4, 5 of actual document.

View the full content.
View Full Document
View Full Document

BIO2110_exam3_fall2014

18 views


Pages:
14
School:
Wright State University
Course:
Bio 2110 - Principles of Molecular and Classical Genetics

Unformatted text preview:

Name BIO 2110 Exam 3 5 November 2014 10 questions 10 points question see last page for potentially useful formulae show your work on all problems Name Name 1 Shown below is an alignment of five different random sequences taken from a population From this alignment estimate the effective population size Ne based on both the nucleotide diversity and the number of segregating sites k 10 8 mutations generation nucleotide Positions with nucleotide variation shaded 1 2 3 4 5 GATCAGTCAT GATCAGTCAT GATCAGTCAT GATCAGTCAT GATCAGTCAT ACGGATCCTA ACCGATCCTA ACGGATCCTA ACGGATCCTA ACGGATCCTA GACTACGACT GACTACGACT GACTACGACT GACTACGACT GTCTACGACT AGCCTAGCAT AGCCTAGCAT AACCTAGCAT AACCTAGCAT AGCCTAGCAT CCGAAATCAA CCGAAATCAA CCGAAATCAA CCGAAATCAA CCGAAATCAA Name 2 The frequency at which humming fish hum is determined by allelic variation at a single gene see below This variation has selective consequences lowered pitched hums can be used to communicate over greater distances than higher pitched hums Given this selective regime and an initial frequency of the A allele of p 0 2 what allelic and genotypic frequencies would you expect after two generations of selection genotype AA Aa aa phenotype 60 Hz 60 Hz 470 Hz relative fitness WAA 1 0 WAa 1 0 Waa 0 3 Name 3 In two populations of giraffes average neck lengths are six feet long In crosses between these giraffe populations F1 progeny have six foot long necks Neck lengths in F2 progeny vary from two feet long to ten feet long Out of 1 792 F2 giraffes seven have necks that are two feet long i Why does phenotype variation appear in the F2 generation when it is absent in the F1 and P0 generations ii How many genes are involved in neck length variation in these giraffes iii What other neck lengths would be observed in the F2 generation iv Out of 1 792 giraffes how many would be expected in each phenotypic class Name 4 In populations of medieval flying rabbits one locus A on chromosome 3 has been found responsible for the carnivorous diet phenotype Geneticists want to determine if an adjacent locus on chromosome 3 is in linkage equilibrium with locus A It appears that the carnivorous diet phenotype is greatly associated with the long fang phenotype locus B recombinants are rare i e long fanged vegans not so prominent in the population Determine the relationship between these loci using the sample population given below Are these two loci in linkage equilibrium If not then what is the disequilibrium value for this population variant positions high lighted A Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind Ind A B C D E F G H I J K L M N O P Q R S T GACTA GAGTA GAGTA GAGTA GAGTA GACTA GACTA GACTA GAGTA GACTA GACTA GAGTA GACTA GACTA GAGTA GAGTA GACTA GAGTA GACTA GAGTA B CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA CCCTA GGTAC



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view BIO2110_exam3_fall2014 and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view BIO2110_exam3_fall2014 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?