Biology B – primavera Questions With Complete Solutions
"Whole genome sequencing increases the effectiveness of the
treatment." which sentences support this information ?
select all that apply . Correct Answers - physicians can
diagnose diseases in early stages .
- people can have personalized treatment plans .
a biologist has a mixture of DNA molecules of different sizes ,
and she needs to determine the exact size of one of them . which
technique should she use ? Correct Answers gel electrophoresis
a biologist wishes to take a useful gene found in penguins and
introduce it into some bacterial cells . her experimental
procedure is given below .
use a restriction enzyme to cut a gene out of the penguin DNA .
use a restriction enzyme to cut open a plasmid .
treat the plasmid with DNA ligase .
treat the plasmid with DNA polymerase .
introduce the plasmid into bacterial cells .
a step is missing . where should it go in this procedure ? Correct
Answers " Mix the desired gene and plasmid together " should
go between steps 2 and 3 .
a biologist wishes to take a useful gene found in pine trees and
introduce it into some bacterial cells. her experimental
procedure is given below .
use a restriction enzyme to cut a gene out of the pine tree DNA .
use a restriction enzyme to cut open a plasmid .
treat the plasmid with DNA ligase .
mix the desired gene and plasmid together .
,introduce the plasmid into bacterial cells .
which steps should be switched in the biologist's procedure ?
Correct Answers 3 and 4
a codon is group of nucleotides that code for an amino acid and
is made of _____ nucleotides Correct Answers 3 nucleotides
A dihybrid cross experiment is carried out in pea plants . Which
statements are true ?
Select all that apply . Correct Answers the f1 generation will all
have both dominant phenotypes .
the f2 generation will be a mixture of four different phenotypes .
A dihybrid cross experiment produces offspring of four different
types in the F2 generation . What is the predicted ratio of the
four phenotypes in the offspring ? Correct Answers 9:3:3:1
A father is color blind , and a mother is homozygous dominant
for normal vision . What is the probability that one of their
offspring will be color blind ? Correct Answers 0%
A female has a brother who is color blind and a mother who is
not .
What is the probability that the female is a carrier for the trait ?
Correct Answers 50%
A few genes are responsible for melanin pigmentation in human
skin . Each gene has one allele that codes for melanin production
and one allele that does not .
,Which of the following are true ? Select all that apply . Correct
Answers the combination of alleles determines how pigmented
the skin will be
each allele only contributes a small amount to the phenotype
a genome is most accurately defined as which of the following ?
Correct Answers all the DNA found in our cells
a graduate student is running a PCR reaction to study DNA
extracted from a lizard specimen from a museum . the reaction
does not seem to be working, so he checks his notes to see what
he added to the reaction mix . he finds the following list : lizard
DNA , DNA polymerase , and DNA nucleotides .
what is the error in the setup ? Correct Answers he forgot to
add primers .
a lab technician is running a test on a patient's sample that is
likely infected with salmonella . the technician correctly
performs PCR on the sample using primers known to identify
salmonella . then they run the PCR product on an
electrophoresis gel . what is the technician likely to see on the
gel if the patient does have salmonella ? Correct Answers
bands matching the size found in known salmonella samples
a lab technician is using PCR to test a patient's DNA for the
presence of a genetic mutation . what exactly will he be looking
for ? Correct Answers dna band of a certain size on a gel
A lab technician observes that the red blood cells in a blood
sample display codominance . What alleles does the person who
provided the blood sample have ? Correct Answers iA and iB
, A lab technician observes that the red blood cells in a blood
sample have surface antigen B . What alleles does the person
who provided the blood sample have ? Correct Answers iBiB
or iBi
A mutated CFTR gene codes for an abnormal CFTR protein .
This protein alters the normal function of the cell, leading to the
disorder cystic fibrosis .
Based on the statements, which of the following is true ?
Correct Answers cystic fibrosis is caused by a mutated cftr
gene.
A pea plant that is tall has a dominant trait . Which statements
are true about the genotype / phenotype relationship of the
plant ?
Select all that apply . Correct Answers - The genotype Tt
always results in a phenotype that is tall .
- When the phenotype is tall , the genotype can either be TT or
Tt .
A person has blood type B .
What combination of alleles could she have to give her this
blood type ?
Select all that apply . Correct Answers iBi
iBiB
a population contains a lot of diversity in genetic traits .
what condition does this describe ? Correct Answers variation
"Whole genome sequencing increases the effectiveness of the
treatment." which sentences support this information ?
select all that apply . Correct Answers - physicians can
diagnose diseases in early stages .
- people can have personalized treatment plans .
a biologist has a mixture of DNA molecules of different sizes ,
and she needs to determine the exact size of one of them . which
technique should she use ? Correct Answers gel electrophoresis
a biologist wishes to take a useful gene found in penguins and
introduce it into some bacterial cells . her experimental
procedure is given below .
use a restriction enzyme to cut a gene out of the penguin DNA .
use a restriction enzyme to cut open a plasmid .
treat the plasmid with DNA ligase .
treat the plasmid with DNA polymerase .
introduce the plasmid into bacterial cells .
a step is missing . where should it go in this procedure ? Correct
Answers " Mix the desired gene and plasmid together " should
go between steps 2 and 3 .
a biologist wishes to take a useful gene found in pine trees and
introduce it into some bacterial cells. her experimental
procedure is given below .
use a restriction enzyme to cut a gene out of the pine tree DNA .
use a restriction enzyme to cut open a plasmid .
treat the plasmid with DNA ligase .
mix the desired gene and plasmid together .
,introduce the plasmid into bacterial cells .
which steps should be switched in the biologist's procedure ?
Correct Answers 3 and 4
a codon is group of nucleotides that code for an amino acid and
is made of _____ nucleotides Correct Answers 3 nucleotides
A dihybrid cross experiment is carried out in pea plants . Which
statements are true ?
Select all that apply . Correct Answers the f1 generation will all
have both dominant phenotypes .
the f2 generation will be a mixture of four different phenotypes .
A dihybrid cross experiment produces offspring of four different
types in the F2 generation . What is the predicted ratio of the
four phenotypes in the offspring ? Correct Answers 9:3:3:1
A father is color blind , and a mother is homozygous dominant
for normal vision . What is the probability that one of their
offspring will be color blind ? Correct Answers 0%
A female has a brother who is color blind and a mother who is
not .
What is the probability that the female is a carrier for the trait ?
Correct Answers 50%
A few genes are responsible for melanin pigmentation in human
skin . Each gene has one allele that codes for melanin production
and one allele that does not .
,Which of the following are true ? Select all that apply . Correct
Answers the combination of alleles determines how pigmented
the skin will be
each allele only contributes a small amount to the phenotype
a genome is most accurately defined as which of the following ?
Correct Answers all the DNA found in our cells
a graduate student is running a PCR reaction to study DNA
extracted from a lizard specimen from a museum . the reaction
does not seem to be working, so he checks his notes to see what
he added to the reaction mix . he finds the following list : lizard
DNA , DNA polymerase , and DNA nucleotides .
what is the error in the setup ? Correct Answers he forgot to
add primers .
a lab technician is running a test on a patient's sample that is
likely infected with salmonella . the technician correctly
performs PCR on the sample using primers known to identify
salmonella . then they run the PCR product on an
electrophoresis gel . what is the technician likely to see on the
gel if the patient does have salmonella ? Correct Answers
bands matching the size found in known salmonella samples
a lab technician is using PCR to test a patient's DNA for the
presence of a genetic mutation . what exactly will he be looking
for ? Correct Answers dna band of a certain size on a gel
A lab technician observes that the red blood cells in a blood
sample display codominance . What alleles does the person who
provided the blood sample have ? Correct Answers iA and iB
, A lab technician observes that the red blood cells in a blood
sample have surface antigen B . What alleles does the person
who provided the blood sample have ? Correct Answers iBiB
or iBi
A mutated CFTR gene codes for an abnormal CFTR protein .
This protein alters the normal function of the cell, leading to the
disorder cystic fibrosis .
Based on the statements, which of the following is true ?
Correct Answers cystic fibrosis is caused by a mutated cftr
gene.
A pea plant that is tall has a dominant trait . Which statements
are true about the genotype / phenotype relationship of the
plant ?
Select all that apply . Correct Answers - The genotype Tt
always results in a phenotype that is tall .
- When the phenotype is tall , the genotype can either be TT or
Tt .
A person has blood type B .
What combination of alleles could she have to give her this
blood type ?
Select all that apply . Correct Answers iBi
iBiB
a population contains a lot of diversity in genetic traits .
what condition does this describe ? Correct Answers variation
