bio 1108 exam 1 (herrick) questions
with correct answers
what are two factors that contribute to phenotype? - CORRECT
| | | | | | | | | |
ANSWER✔✔-genotype and environment | |
species - CORRECT ANSWER✔✔-individuals that are able to exchange
| | | | | | | | |
genetic material |
gene pool - CORRECT ANSWER✔✔-all alleles present in individuals of
| | | | | | | | | |
that species
|
populations - CORRECT ANSWER✔✔-interbreeding groups of organisms
| | | | | | |
of the same species living in the same geographical area
| | | | | | | | |
what are two main sources that lead to genetic variation? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-mutation and recombination | |
what can somatic mutations lead to? - CORRECT ANSWER✔✔-cancer,
| | | | | | | | |
disease and even death to an INDIVIDUAL
| | | | | |
,what can germ line mutations lead to? - CORRECT ANSWER✔✔-
| | | | | | | | |
mutations that are passed down to offspring
| | | | | |
recombination; name two ways it can occur - CORRECT ANSWER✔✔- | | | | | | | | |
new alleles may be generated through crossing over and independent
| | | | | | | | | |
assortment
allele frequency - CORRECT ANSWER✔✔-rate of occurrences of alleles
| | | | | | | | |
in a population
| |
gene locus - CORRECT ANSWER✔✔-the location of a certain gene/allele
| | | | | | | | |
allele - CORRECT ANSWER✔✔-a form of a gene; one copy of a gene
| | | | | | | | | | | |
example: A, a | |
how is genetic variation measured? - CORRECT ANSWER✔✔-through
| | | | | | | |
the allele frequency equation
| | |
what is the allele frequency equation? - CORRECT ANSWER✔✔-AF=(# of
| | | | | | | | |
copies of an allele)/(total # of alleles in population)
| | | | | | | | |
, evolution - CORRECT ANSWER✔✔-change in allele frequency or
| | | | | | | |
genotype frequency over time | | |
how is evolution measured? - CORRECT ANSWER✔✔-examinable
| | | | | | |
physical traits, gel electrophoresis, DNA sequences;
| | | | |
most importantly: the hardy-weinberg equilibrium
| | | |
what does the hardy-weinberg equilibrium model describe? - CORRECT
| | | | | | | | |
ANSWER✔✔-the situation in which evolution does NOT occur | | | | | | |
a population in the HW equilibrium meets what requirements? -
| | | | | | | | | |
CORRECT ANSWER✔✔-1. closed population (no migration or gene flow)
| | | | | | | |
2. no mutations
| |
3. large population (no genetic drift)
| | | | |
4. random mating (no sexual selection)
| | | | |
5. no natural selection
| | |
what is the HW equation? - CORRECT ANSWER✔✔-p^2 + 2pq + q^2
| | | | | | | | | | |
natural selection occurs when... - CORRECT ANSWER✔✔-...individuals
| | | | | | |
with certain traits reproduce more offspring than do individuals without
| | | | | | | | |
those traits
| |
with correct answers
what are two factors that contribute to phenotype? - CORRECT
| | | | | | | | | |
ANSWER✔✔-genotype and environment | |
species - CORRECT ANSWER✔✔-individuals that are able to exchange
| | | | | | | | |
genetic material |
gene pool - CORRECT ANSWER✔✔-all alleles present in individuals of
| | | | | | | | | |
that species
|
populations - CORRECT ANSWER✔✔-interbreeding groups of organisms
| | | | | | |
of the same species living in the same geographical area
| | | | | | | | |
what are two main sources that lead to genetic variation? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-mutation and recombination | |
what can somatic mutations lead to? - CORRECT ANSWER✔✔-cancer,
| | | | | | | | |
disease and even death to an INDIVIDUAL
| | | | | |
,what can germ line mutations lead to? - CORRECT ANSWER✔✔-
| | | | | | | | |
mutations that are passed down to offspring
| | | | | |
recombination; name two ways it can occur - CORRECT ANSWER✔✔- | | | | | | | | |
new alleles may be generated through crossing over and independent
| | | | | | | | | |
assortment
allele frequency - CORRECT ANSWER✔✔-rate of occurrences of alleles
| | | | | | | | |
in a population
| |
gene locus - CORRECT ANSWER✔✔-the location of a certain gene/allele
| | | | | | | | |
allele - CORRECT ANSWER✔✔-a form of a gene; one copy of a gene
| | | | | | | | | | | |
example: A, a | |
how is genetic variation measured? - CORRECT ANSWER✔✔-through
| | | | | | | |
the allele frequency equation
| | |
what is the allele frequency equation? - CORRECT ANSWER✔✔-AF=(# of
| | | | | | | | |
copies of an allele)/(total # of alleles in population)
| | | | | | | | |
, evolution - CORRECT ANSWER✔✔-change in allele frequency or
| | | | | | | |
genotype frequency over time | | |
how is evolution measured? - CORRECT ANSWER✔✔-examinable
| | | | | | |
physical traits, gel electrophoresis, DNA sequences;
| | | | |
most importantly: the hardy-weinberg equilibrium
| | | |
what does the hardy-weinberg equilibrium model describe? - CORRECT
| | | | | | | | |
ANSWER✔✔-the situation in which evolution does NOT occur | | | | | | |
a population in the HW equilibrium meets what requirements? -
| | | | | | | | | |
CORRECT ANSWER✔✔-1. closed population (no migration or gene flow)
| | | | | | | |
2. no mutations
| |
3. large population (no genetic drift)
| | | | |
4. random mating (no sexual selection)
| | | | |
5. no natural selection
| | |
what is the HW equation? - CORRECT ANSWER✔✔-p^2 + 2pq + q^2
| | | | | | | | | | |
natural selection occurs when... - CORRECT ANSWER✔✔-...individuals
| | | | | | |
with certain traits reproduce more offspring than do individuals without
| | | | | | | | |
those traits
| |
