IB 150 Exam 3 UIUC Questions With Complete Solutions
directional fitness Correct Answers favors one phenotype over
another
directional fitness graph trend Correct Answers consistent
increase
disruptive selection Correct Answers favors both extreme
phenotypes
disruptive selection graph trend Correct Answers U shape
examples of abiotic factors Correct Answers ph, temperature,
moisture
examples of biotic factors Correct Answers animals, plants, or
interactions with other organisms
fitness = Correct Answers reproductive success: how many
offspring an individual produces over their lifetime
fitness landscape Correct Answers used to visualize the
relationship between genotypes and reproductive success
how does interbreeding change genotype frequencies Correct
Answers it makes it more likely that recessive alleles will
appear
, how does natural selection work (directly on ONLY the
phenotype) Correct Answers those with certain traits produce
more offspring
how does natural selection work (indirectly on genotype)
Correct Answers alleles increase in frequency from one
generation to the next
if gene flow is high, two populations will have ____________
Correct Answers similar allele frequency
in what sense is natural selection arguably the most important
evolutionary mechanism Correct Answers predictably results in
favorable traits
natural selection has to occur if Correct Answers individuals
differ from each other, traits are heritable, and fitness differs
natural selection is a ___________ Correct Answers non-
random process that leads to predictable changes in allele
frequencies
relative fitness = Correct Answers number of offspring in a
lifetime compared to average offspring per individual
stabilizing selection Correct Answers individuals near the
center of a distribution curve have higher fitness
stabilizing selection graph trend Correct Answers hill shape
directional fitness Correct Answers favors one phenotype over
another
directional fitness graph trend Correct Answers consistent
increase
disruptive selection Correct Answers favors both extreme
phenotypes
disruptive selection graph trend Correct Answers U shape
examples of abiotic factors Correct Answers ph, temperature,
moisture
examples of biotic factors Correct Answers animals, plants, or
interactions with other organisms
fitness = Correct Answers reproductive success: how many
offspring an individual produces over their lifetime
fitness landscape Correct Answers used to visualize the
relationship between genotypes and reproductive success
how does interbreeding change genotype frequencies Correct
Answers it makes it more likely that recessive alleles will
appear
, how does natural selection work (directly on ONLY the
phenotype) Correct Answers those with certain traits produce
more offspring
how does natural selection work (indirectly on genotype)
Correct Answers alleles increase in frequency from one
generation to the next
if gene flow is high, two populations will have ____________
Correct Answers similar allele frequency
in what sense is natural selection arguably the most important
evolutionary mechanism Correct Answers predictably results in
favorable traits
natural selection has to occur if Correct Answers individuals
differ from each other, traits are heritable, and fitness differs
natural selection is a ___________ Correct Answers non-
random process that leads to predictable changes in allele
frequencies
relative fitness = Correct Answers number of offspring in a
lifetime compared to average offspring per individual
stabilizing selection Correct Answers individuals near the
center of a distribution curve have higher fitness
stabilizing selection graph trend Correct Answers hill shape
