ecology Flashcards
Evolution
the change within a population over time
The lower the fossil is found in the rock ________
the older it is
Fossils Found in
sedimentary rocks
Homologous Structures
Structures that look similar but, have different functions
Analogous structures
structures that have the same function but different anatomy, an example of this is the wing of a bird vs the wing of a butterfly
Vestigial Structures
structures that are there but have no purpose/no function, examples of this are the human appendix, human coccyx, and the pelvic bone of pythons
All living things share the same _________
basic molecular reactions
Comparative biochemistry is used to
suggest common ancestry between organisms
Embryology
the study of embryos
At some point human embryos had ________
gill slits and a tail
The theory of natural selection
Developed by Darwin
Mutation
any change to the genetic material
Sexual Reproduction
genetic shuffling (meiosis and fertilization)
Structural change
these are structures that have been developed/modified
Functional Changes
changes in the function
Behavioral Change
a change in how the organism acts
Reproductive rate
the faster the reproductive rate the faster the rate of evolution
Life Span
the shorter the lifespan, the faster the rate of evolution
There are 2 hypotheses for types of rates of evolution
gradualism and punctuated equilibrium
Gradualism
Evolution is constantly going on but its slow
Punctuated Equilibrium
There are long period of stability, which is no change in species, which is broken up by brief periods of rapid change
Taxonomy
the science of classification
Levels of Classification (taxons) dkpcofgs
domain, kingdom,phylum,class,order, family, genus, species
Binomial nomenclature first part
The first name represents the organisms genus.
* The first letter is always capitalized.
* The name is written in italics.
* Can be abbreviated by using just the first letter
