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12 Cards in this Set
- Front
- Back
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Adaptive Change
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heritable traits change inter-generationally in response to environmental conditions and diversity
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diversity
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species are related by common ancenstry and arise from pre-existing species
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Evolution by natural selection generates
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1. Adaptive Change
2. Diversity |
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Biogenetic Tree
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Darwinian Evolution produces a tree of life.
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Adaptive Radiation
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Happens when one or a small group of ancestral species diversifies, often "rapidly" into a large number of descendent species that occupy a wide variety of ecological niches.
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Natural Selection
Two conditions must be met for natural selection to occur amongst individuals in a population |
1. individuals in the population vary in characters that are heritable
2. in a particular environment, certain versions these hertiable traits help individuals survive better or reproduce more than do other versions |
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Evolution
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Evolution by natural selection occurs when heritable variation leads to differential success in survival and reproduction
________________________ Evolution is defined more specifically as a change in allele frequencies in a population over time-- intergenerationally |
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Adaption and Diversity Assignment
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The goal of the exercise is to explore how much genetic variation is needed for a population to adapt to environmental change, and to explore how variation in environmental conditions affects the genetic diversity of populations.
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Rosemary and Peter Grant's Finch Experiments
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Changes in body size and shape in medium ground finches on Isle Daphne Major showed that *drought-induced changes in seed availability was the selective force that led to evolution* of an increase in the finch population's average beak depth.
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Exercise 5-- The Organization of Cells
--Lab Study C: Multicellular organism (Purpose) |
-Characterize the organization of plant cells in a wet mount Elodea
-Characterize animal cell organization in human cells |
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Exercise 5-- The Organization of Cells
--Lab Study D: Unknowns (Purpose) |
-Characterize morphological and behavioral traits of unknown microbes in a sample pond water
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Elodea Canadensis
(Plant Cell) |
Other structures: cytoplasmic strands
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