BIOL 320 LIFE 320-
EXAM 2
Adaptive evolution - CORRECT REPLY>>>>>>-Evolutionary
changes that improve the fit of organisms to their environment;
response to selection (R);
Mathematic approach to adaptive evolution - CORRECT
REPLY>>>>>>-R= (Vg/Vp)*S; adaptive evolution = proportion of
phenotypic variation due to genetics * the strength of selection
Evolution - CORRECT REPLY>>>>>>-Most broadly: change
over time; this is change in the genetic composition of a population
Phenotype - CORRECT REPLY>>>>>>-morphology,
physiology, etc. of an individual; outward expression of genotype as
modified by the environment
,Genotype - CORRECT REPLY>>>>>>-genetic make-up of an
individual
Relationship between phenotype and genotype - CORRECT
REPLY>>>>>>-Phenotype = Genotype + Environment (P=G+E)
Natural selection- MEMORIZE - CORRECT REPLY>>>>>>-
differential reproduction and survival of individuals with different
phenotypes
Fitness - CORRECT REPLY>>>>>>-generally, the
reproductive success of an organism, and how many of its genes get
passed on to subsequent generations
Phenotypic variation - CORRECT REPLY>>>>>>-differences
in phenotypes; (Vp)
Vp = Vg + Ve (P=G+E)
Quantitative trait- BOOK - CORRECT REPLY>>>>>>-
frequency of phenotypes is usually a bell curve
, Polygenic trait- BOOK - CORRECT REPLY>>>>>>-see
quantitative trait
Stabilizing selection (type of natural selection) - CORRECT
REPLY>>>>>>-the most common phenotype is the most fit
phenotype- this gives us a normal bell curve in the next generation
Directional selection (type of natural selection) - CORRECT
REPLY>>>>>>-the most fit phenotype is one of the extremes
Disruptive selection (type of natural selection) - CORRECT
REPLY>>>>>>-both ends of the phenotypic curve are fit and
the middle is not; this commonly leads to maintaining all of the
phenotypes; extreme cases lead to two distinctly different phenotyes
Frequency dependent selection (type of natural selection) -
CORRECT REPLY>>>>>>-the fitness of organisms depends
on their frequency in the population
EXAM 2
Adaptive evolution - CORRECT REPLY>>>>>>-Evolutionary
changes that improve the fit of organisms to their environment;
response to selection (R);
Mathematic approach to adaptive evolution - CORRECT
REPLY>>>>>>-R= (Vg/Vp)*S; adaptive evolution = proportion of
phenotypic variation due to genetics * the strength of selection
Evolution - CORRECT REPLY>>>>>>-Most broadly: change
over time; this is change in the genetic composition of a population
Phenotype - CORRECT REPLY>>>>>>-morphology,
physiology, etc. of an individual; outward expression of genotype as
modified by the environment
,Genotype - CORRECT REPLY>>>>>>-genetic make-up of an
individual
Relationship between phenotype and genotype - CORRECT
REPLY>>>>>>-Phenotype = Genotype + Environment (P=G+E)
Natural selection- MEMORIZE - CORRECT REPLY>>>>>>-
differential reproduction and survival of individuals with different
phenotypes
Fitness - CORRECT REPLY>>>>>>-generally, the
reproductive success of an organism, and how many of its genes get
passed on to subsequent generations
Phenotypic variation - CORRECT REPLY>>>>>>-differences
in phenotypes; (Vp)
Vp = Vg + Ve (P=G+E)
Quantitative trait- BOOK - CORRECT REPLY>>>>>>-
frequency of phenotypes is usually a bell curve
, Polygenic trait- BOOK - CORRECT REPLY>>>>>>-see
quantitative trait
Stabilizing selection (type of natural selection) - CORRECT
REPLY>>>>>>-the most common phenotype is the most fit
phenotype- this gives us a normal bell curve in the next generation
Directional selection (type of natural selection) - CORRECT
REPLY>>>>>>-the most fit phenotype is one of the extremes
Disruptive selection (type of natural selection) - CORRECT
REPLY>>>>>>-both ends of the phenotypic curve are fit and
the middle is not; this commonly leads to maintaining all of the
phenotypes; extreme cases lead to two distinctly different phenotyes
Frequency dependent selection (type of natural selection) -
CORRECT REPLY>>>>>>-the fitness of organisms depends
on their frequency in the population
