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UCD Bis 2B Midterm 2 Questions & Answers Solved 100% Correct!!
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UCD Bis 2B Midterm 2 Questions & Answers Solved 100% Correct!!
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Name: Score:78 Multiple choice questions
Definition 1 of 78
Trait from shared ancestry
synapomorphy
homoplasy
Co-dominance
Exaptation
Definition 2 of 78
Indirect competition (mating displays)
Temporal isolation
Allopatric speciation
Disruptive Selection
Intersexual Selection
,Term 3 of 78
Species
Random changes in allele frequencies and loss of alleles due to chance events
-occurs b/c populations are not infinitely large
1. Spatial/geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Behavioral isolation
5. Mechanical isolation
6. Gametic isolation
R=(h^2)s
R-Evolutionary response
h-Heritibility (not expressed as squared)
s-Selection differential
R=0: variation is all environmental
R=1: variation is all genetic
Consists of groups of actually or potentially interbreeding natural populations that are
repoductively isolated from other such groups
Term 4 of 78
homoplasy
Many genes contribute to expression of one trait
Base pair insertion or deletion
-often lethal
-causes rest of strand to be read incorrectly
Trait from independent evolution
One gene affects many traits
, Definition 5 of 78
Includes ALL of taxa/species descended from a common ancestor
Population bottleneck
Complex character
Postzygotic Barriers
Monophyletic clade
Definition 6 of 78
Random changes in allele frequencies and loss of alleles due to chance events
-occurs b/c populations are not infinitely large
Prezygotic Barriers
Frameshift
Mutations are:
Genetic Drift
Definition 7 of 78
Change in allele frequencies due to a reduction in population size
Directional Selection
Behavorial isolation
Mutations are:
Population bottleneck
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