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23 Cards in this Set

  • Front
  • Back
3 phases of logistic growth
phase 1. population grows rapidly, phase 2. growth slows, 3. growth stops; population size stabilizes at carrying capacity.
body parts that share common function, but not structure, and that do not share a common ancestor
anaphase 2 (meosis 2)
the paired chromatids separate
anaphase 1 (meosis 1)
spindle fibers pull each homologous chromosome pair toward opposite ends of the cell
anaphase (mitosis)
the chromosomes separate and move along the spindle fibers to opposite ends of the cell
carrying capacity
the maximum number of individuals of a particular species that a particular environment can support
cytokindsis (meosis 1)
two new cells are formed called daughter cells
cytokinesis (mitosis)
the cell splits into two
deciduous forest
deciduous and coniferous trees
density dependent limiting factors
operate strongly only when population density reaches a certain level
density independent limiting factors
factors that affect all populations in similar ways regardless of population size and density
low precipitation
two complete sets of inherited chromosomes and two complete sets of genes
8 levels of taxonomic organization
domain, kingdom, phylum, class, order, family, genus, species
exponential growth
the larger population gets, the faster it grows
g1 phase (mitosis)
cells increase in size and synthesize new proteins
g2 phase (mitosis)
many of organelles and molecules required for cell division are produced
grassland plants are resistant to fire and spread seeds by wind
contain only one set of chromosomes and only a single set of genes
structures that are shared by related species and that have been inherited from a common ancestor
each of the four chromosomes from the male parent has a corresponding chromosome from the female parent
Interphase (mitosis)
an "in-between" period of growth divided into 3 parts: g1, S, and g2
in what situation does natural selection occur?
any situation in which more individuals are born than can survive(the struggle for exstensice) there Is natural heritable variation (varation and adaptation) and there is variable fitness among individuals (survival of the fittest)