Evolution Answers

Enumerate various sources of heritable
biological variations.

With the help of a suitable example, discuss
how biochemistry provides evidence in
favour of evolution.

List one distinct impact on freshwater macroinvertebrate communities (species, species richness, densities) likely to result from reduced meltwater input to freshwater mountain streams if global warming continues to reduce the number and extent of glaciers.?
Did the paper by Brown et al. directly measure decreased meltwater resulting from shrinking glaciers caused by climate change (specifically global warming)?

Enumerate the two major changes that took place in the history of evolution of modern horse.

Describe Darwin's theory in the context of the scientific process.

Differentiate between Sympartic Speciation and Geographical Speciation.

Outline the hominid lineage upto modern human and discuss the major evidences that support it.

Explain how homologous organs and
vestigial organs support speciation through
evolution.

If the original population of 200 (from question #1) was hit by a tsunami and 100 organisms were wiped out, leaving 63 homozygous recessive out of the 100 survivors. Assuming that all individuals were equally likely to be wiped out, how did the tsunami affect the predicted frequencies of the alleles in the population? (Hint: Assume the new population is at equilibrium – AFTER the event – so you are comparing two populations which are at equilibrium to look for changes in allele frequencies.)

If 15% of the population carries at least one copy of the recessive allele: What is the predicted frequency of individuals in the population that express the dominant phenotype? What is the predicted frequency of individuals in the population that express the recessive phenotype?