BIO 124 Test 1 ACTUAL Exam Questions
and CORRECT Answers
allele - CORRECT ANSWER - one or more alternative forms of a gene found at the same
location on homologous chromosomes
theory - CORRECT ANSWER - A broad explanation for events that is widely accepted as
true
Genotype - CORRECT ANSWER - genetic makeup of an organism
Phenotype - CORRECT ANSWER - An organism's physical appearance, or visible traits.
homologous - CORRECT ANSWER - all humans have ______ chromosomes
reproduction - CORRECT ANSWER - why do all humans have homologous
chromosomes?
gene pool - CORRECT ANSWER - All the genes, including all the different alleles for
each gene, that are present in a population at any one time
Genome - CORRECT ANSWER - all of an organism's genetic material
homologous - CORRECT ANSWER - crossing over can only happen if chromosomes are
Prophase 1 - CORRECT ANSWER - When does crossing over occur?
genetic variation - CORRECT ANSWER - homologous chromosomes line up randomly in
tetrads causing
, gene - CORRECT ANSWER - A segment of DNA on a chromosome that codes for a
specific trait
genetic composition, population, shift, allele, increases, fitness - CORRECT ANSWER -
Fill in the blanks for the definition of evolution:
a change in the _________ _________ of a _____________ caused by a _______ in the _______
frequency within the population. This shift ________ the ________ of the population.
Genomic species - CORRECT ANSWER - a group of individuals that have the same
genome
biological species - CORRECT ANSWER - a group of individuals that can reproduce to
have viable offspring
offspring - CORRECT ANSWER - the individual that has the most __________ is the
most adapted.
Fitness - CORRECT ANSWER - how much reproductive success an individual has
Population - CORRECT ANSWER - organisms of the same species in a particular area
population
change in alleles
increase in fitness - CORRECT ANSWER - 3 things have to the true for there to be
evolution
mutation > functional allele > change in frequency - CORRECT ANSWER - 3 steps of
evolution
and CORRECT Answers
allele - CORRECT ANSWER - one or more alternative forms of a gene found at the same
location on homologous chromosomes
theory - CORRECT ANSWER - A broad explanation for events that is widely accepted as
true
Genotype - CORRECT ANSWER - genetic makeup of an organism
Phenotype - CORRECT ANSWER - An organism's physical appearance, or visible traits.
homologous - CORRECT ANSWER - all humans have ______ chromosomes
reproduction - CORRECT ANSWER - why do all humans have homologous
chromosomes?
gene pool - CORRECT ANSWER - All the genes, including all the different alleles for
each gene, that are present in a population at any one time
Genome - CORRECT ANSWER - all of an organism's genetic material
homologous - CORRECT ANSWER - crossing over can only happen if chromosomes are
Prophase 1 - CORRECT ANSWER - When does crossing over occur?
genetic variation - CORRECT ANSWER - homologous chromosomes line up randomly in
tetrads causing
, gene - CORRECT ANSWER - A segment of DNA on a chromosome that codes for a
specific trait
genetic composition, population, shift, allele, increases, fitness - CORRECT ANSWER -
Fill in the blanks for the definition of evolution:
a change in the _________ _________ of a _____________ caused by a _______ in the _______
frequency within the population. This shift ________ the ________ of the population.
Genomic species - CORRECT ANSWER - a group of individuals that have the same
genome
biological species - CORRECT ANSWER - a group of individuals that can reproduce to
have viable offspring
offspring - CORRECT ANSWER - the individual that has the most __________ is the
most adapted.
Fitness - CORRECT ANSWER - how much reproductive success an individual has
Population - CORRECT ANSWER - organisms of the same species in a particular area
population
change in alleles
increase in fitness - CORRECT ANSWER - 3 things have to the true for there to be
evolution
mutation > functional allele > change in frequency - CORRECT ANSWER - 3 steps of
evolution
