IB 150 Week 12 Questions With Complete Solutions
Define absolute fitness Correct Answers A way to measure how
many organisms a phenotype produces. It is the reproductive
success, the number of successful offspring f a phenotype
Define adaptation Correct Answers any heritable trait that is
going to increase the fitness of the organism that has it relative
to an organism that does not possess that trait
Define bottleneck effect Correct Answers A change in allele
frequency following a dramatic reduction in the size of a
population
Define crossing over Correct Answers Process in which
homologous chromosomes exchange portions of their
chromatids during meiosis.
Define evolution Correct Answers The process by which
modern organisms have descended from ancient organisms. It is
how organisms change overtime to better survive in a certain
environment
Define founder effect Correct Answers Changes in allele
frequency as a result of the migration of a small subgroup of a
population
Define gametes Correct Answers sex cells such as egg and
sperm cells
, Define gene flow Correct Answers movement of alleles from
one population to another
Define genetic drift Correct Answers Random change in allele
frequency caused by a series of chance occurrences that cause an
allele to become more or less common in a population
Define genetic recombination Correct Answers Occurs as a
result of crossing over and it is when genetic information is
exchanged between homologous non-sister chromatids
Define interspecific competition Correct Answers the
competition of individuals of 2 or more different species over
some shared resource
Define intraspecific competition Correct Answers competition
among individuals of the same species with each other
Define microevolution Correct Answers Refers to changes in
allele frequencies within a single population
Define mutations Correct Answers Changes in the genetic
material of alleles that leads to new alleles in a population
Define natural selection Correct Answers The process by which
organisms that are most suited to their environment survive and
reproduce most successfully (survival of the fittest)
Define pleiotropy Correct Answers The ability of a single gene
to have multiple effects.
Define absolute fitness Correct Answers A way to measure how
many organisms a phenotype produces. It is the reproductive
success, the number of successful offspring f a phenotype
Define adaptation Correct Answers any heritable trait that is
going to increase the fitness of the organism that has it relative
to an organism that does not possess that trait
Define bottleneck effect Correct Answers A change in allele
frequency following a dramatic reduction in the size of a
population
Define crossing over Correct Answers Process in which
homologous chromosomes exchange portions of their
chromatids during meiosis.
Define evolution Correct Answers The process by which
modern organisms have descended from ancient organisms. It is
how organisms change overtime to better survive in a certain
environment
Define founder effect Correct Answers Changes in allele
frequency as a result of the migration of a small subgroup of a
population
Define gametes Correct Answers sex cells such as egg and
sperm cells
, Define gene flow Correct Answers movement of alleles from
one population to another
Define genetic drift Correct Answers Random change in allele
frequency caused by a series of chance occurrences that cause an
allele to become more or less common in a population
Define genetic recombination Correct Answers Occurs as a
result of crossing over and it is when genetic information is
exchanged between homologous non-sister chromatids
Define interspecific competition Correct Answers the
competition of individuals of 2 or more different species over
some shared resource
Define intraspecific competition Correct Answers competition
among individuals of the same species with each other
Define microevolution Correct Answers Refers to changes in
allele frequencies within a single population
Define mutations Correct Answers Changes in the genetic
material of alleles that leads to new alleles in a population
Define natural selection Correct Answers The process by which
organisms that are most suited to their environment survive and
reproduce most successfully (survival of the fittest)
Define pleiotropy Correct Answers The ability of a single gene
to have multiple effects.
