BIOL 313 Midterm Set Questions and Correct Answers/ Latest Update / Already Graded

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BIOL 313 Midterm Set Questions and
Correct Answers/ Latest Update / Already
Graded
Ecology

Ans: the branch of science dedicated to the study of
relationships between organisms and the enviroment


evolution

Ans: change over time in the proportions of indi vidual
organisms that differ genetically


microevolution

Ans: change over time in gene frequency within a population


macroevolution

Ans: change overtime in the proportions of species that
determines the diversity of a taxonomic group (new or different
species)


natural selection



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Ans: - different genetic contributions by particular phenotypes
to ---the next generation
-causes non random changes
-depends on both genotype and phenotype
-involves ecological interactions
-results in adaptations


fitness

Ans: the average contribution of genes to the next generation
by a particular phenotype in a particular environment


adaptation

Ans: the process by which populations of organisms evolve in
such a way as to become better suited to their environment as
advantageous traits become predominant


4 modes of selections

Ans: 1. Stabilizing
2. Directional
3. Disruption
4. Frequency dependent selection



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