Exam1_2012KEY

Make sure you indicate the units 2 points nm 1fst

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ue of Ne you calculated in 15a above, what is the nucleotide diversity of the population if the neutral mutation rate is 2 x 10 ­9 changes per site per generation (2 points)? Using π = 4Neµ , we get: π = 4*48,000*0.000000002 = 0.000348 16. What is the average time to fixation, in years, of a new deleterious mutation (with an s value of  ­0.1) in a diploid population of Galapagos hawks with an effective population size of 3,000? The hawks have a 6 ­year generation time. Please include time units in your answer (4 points)? t = (2/s)ln(2Ne) t = (2/0.1)ln(2*3,000) = (20)*8.7 = 174 generations*6 years/generation = 1044 years. 17. In a diploid population of dragonflies, the proportion of nucleotide differences between 2 alleles that are each 450bp long is 2%. What is the number of nucleotide differences between the two alleles (2 points)? First, let p = nd/L Solve for nd = p*L = 0.02*450 nd = 9 18. First, below give a genetical definition of evolution (2 points). Can there be evolution without natural se...
View Full Document

Ask a homework question - tutors are online