Biology 180: Study Questions 9
1. Consider consumption.
a. Alder (a tree species with nitrogen-fixing bacteria), has a carbon-to-nitrogen (C:N) ratio of 19:1. Willow and
poplar, which do not have N-fixing bacteria, have C:N ratios of 26:1 and
Biol 180 Exam 2
6 May 2016
Name: _Answer key_
1. [10 pts] Use the data table at left to estimate the
phylogeny for the five included taxa. Mark the
branches to show the appearance of each derived
trait. Use the bolded text as abbreviations.
Biol 180 Exam 1
15 Apr 2016
Name: _Answer Key _
1. [6 pts] Whippets are dogs bred to run on tracks. Muscle
development is regulated by the myostatin gene, which
has two alleles: + and mh (see table).
a) Would it be possible to develop a pure-breeding line