Hox genes (homeobox) and Homeodomain Polypeptide - ANSWERS-A group of genes that regulate development in multicellular organisms; this includes cell differentiation & morphogenesis.
-Hox a gene also acts as a switch that turns on and off.
Deme (interbreeding group, or evolutionary population...
Hox genes (homeobox) and Homeodomain Polypeptide - ANSWERS-A group of genes
that regulate development in multicellular organisms; this includes cell differentiation &
morphogenesis.
-Hox a gene also acts as a switch that turns on and off.
Deme (interbreeding group, or evolutionary population) - ANSWERS-Population unit or
panmictic unit (mendelian population)
-A sub-population (a smaller group within the population that can freely interbreed)
Evolution - ANSWERS-Change in a kind of organism over time; the process by which
modern organisms have descended from ancient organisms.
-Genetic change over time
Microevolution - ANSWERS-Evolutionary change within a species or small group of
organisms, especially over a short period. (Change in allele frequencies in a population
over generations.)
-The smallest event in allele frequency.
Macroevolution - ANSWERSLarge-scale evolutionary changes that take place over long
periods of time. Speciation over long periods of time.
Uniformitarianism - ANSWERS(Buffon; Lamark) gradual & natural processes
observable today could not be explained in the development of all geological features.
Homoplasy - ANSWERSA similar (analogous) structure or molecular sequence that has
evolved independently in two species.
Ecology - ANSWERSScientific study of the behavior of individuals, populations
&communities, both abiotic (non-living components) & biotic (living components)
allopolyploidy - ANSWERSA species with multiple sets of chromosomes derived from
different species
Synapomorphy - ANSWERSshared derived character
, Plesiomorphy - ANSWERSancestral (primitive) character state
Autopomorphy - ANSWERSunique, derived character state
Teleology - ANSWERS[the explanation of phenomena by the purpose they serve rather
than by postulated causes.]
Anagenesis - ANSWERSchange within a lineage (change in gene frequency) (entire
population is different from its ancestral population) where one species evolves into
another without any splitting of the phylogenetic tree.
1 species to start, 1 different species at finish
Cladogenesis - ANSWERSPhenomenon of evolution that occurs by the divergence
(branching/splitting) of taxa due to positive selection (when organisms physically
separate &undergo unique changes).
punctuated equilibrium - ANSWERSThe theory that species evolve during short periods
of rapid change
linkage (=Gametic) disequilibrium - ANSWERSWhen a pair of alleles from two loci are
inherited together in the same gamete more/less often than random chance would
expect.
Bio magnification of Pesticides (What ecosystem model explains this? - ANSWERSIt
refers to the increased concentration of a toxic chemical the higher an animal is on the
food chain. The food chain explains this.
molecular clock - ANSWERS[Model that uses DNA comparisons to estimate the length
of time that two species have been evolving independently]
neutral genes - ANSWERS[do not confer differences in fitness and are not affected by
natural selection]
orthalogous genes - ANSWERS-Homologous genes that are found in different
organisms/species but are derived from a single common ancestral gene present in the
common ancestor of those organisms.
-Homologous genes are two or more genes that descend from a common ancestral
DNA sequence.
paralogous genes - ANSWERS-Homologous genes that are found in the same genome
as a result of gene duplication.
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