Variance & Scientific Method Flashcards
What is the highest level of organization of life?
Biosphere
Name the biological organization levels from smallest to largest.
Molecules, Organelle, Cells, Tissue, Organs, Organism, Population, Community, Ecosystems, Biosphere.
Properties of Life: What is Order?
Why something is a certain colour, shape, smell, etc…
Properties of Life: Evolution
How appearances change to adapt
Properties of Life: Response to Environment
How they adapt, acclimatize, adjust, etc…
Properties of Life: Regulation (Homeostasis)
Mechanisms that prevent changes in the environment, in & out, of our bodies (ie: receptors, control center, an effector)
Properties of Life: Energy Required
Cellular respiration and photosynthesis
Properties of Life: Growth and Development
To be able to go through mitosis
Properties of Life: Reproduction (DNA)
To go through meiosis
What is variability
The “variance” of the system; measures hw far a set of numbers is spread out.
Little variability means what?
It indicates that the data is cluttered tightly around the average.
High variability means what?
It indicates that the data is spread out (lots of different observations).
What formula is this for? [Σ(xi – mean)^2] / N
Variance of the entire population, σ^2
What formula is this for? [Σ(xi – mean)^2] / n-1
Variance of a sample (part of population), s^2
What are the 3 primary sources of genetic variation?
Mutation – Changes in DNA, Gene flow – movement of genes from one pop. to another, Meiosis – process of reshuffling genes.
