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Bio 342 CSULB Questions with Correct Answers
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Bio 342 CSULB Questions with Correct Answers
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Bio 342 CSULB Questions with Correct Answersacclimatization Correct Answer ✓✓ a physiological, biochemical, or anatomic change within an individual animal during its life that results from the animal's chronic exposure in its native habitat to new naturally occurring environmental conditions.
Acclimation Correct Answer ✓✓ refers to the same process except it is initiated by the investigator either in the lab or in the wild. Both tend to be reversible
Both refer to phenotypic plasticity
Adaptation Correct Answer ✓✓ evolutionary adjustment of physiology to changing environmental conditions
Acute Response Correct Answer ✓✓ rapid responses to changes in the environment.
time scale: minutes
- e.g. often daily, semi-diurnal env. changes
not necessarily related to a change in gene expression
Phenotypic Plasticity (Short Term) Correct Answer ✓✓ • change in gene expression and physiological functions with ontogeny within life stages
- change in phenotype, not genotype Plasticity Correct Answer ✓✓ differing physiological responses exhibited by an individual under different environmental conditions
Examples: temperature/photoperiod acclimation
Repeatability Correct Answer ✓✓ consistency in physiological responses exhibited by an individual under a range of conditions
Evolutionary (Long Term) Correct Answer ✓✓ • change in frequencies of genes among animal populations
- change in genotype and phenotype
- can lead to speciation
• time scale
- generational
Convergence Correct Answer ✓✓ similarities in adaptation to similar environments
Phylogenetic affinities Correct Answer ✓✓ - closely related species are similar because of ancestry
Divergence Correct Answer ✓✓ Closely-related species are adapted to different environments; Lack of "phylogenetic affinity" of phenotype
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