The University of British Columbia MBG 1000 Final Exam |
Questions with 100% Verified Answers | Latest Update
Question:
TTGCGGTACACAAATTCCACAGGTCTAATCTCGCT Which mRNA molecule would represent the
transcription of the DNA molecule shown above?
Answer:
AACGCCAUGUGUUUAAGGUGUCCAGAUUAGAGCGA
Question:
AACGCCAUGUGUUUAAGGUGUCCAGAUUAGAGCGA Which polypeptide is encoded by the DNA
molecule shown above?
Answer:
Met-Cys-Leu-Arg-Cys-Pro-Asp
Question:
TTGCGGTACACAAATTCCACAGGTCTAATCTCGCT If G is substituted for the underlined A on the DNA
template, this mutation would be classified as a:
Answer:
silent mutation
Question:
what is the length of the resultant polypeptide when the mutation in question 3 occurs? (silent
mutation)
Answer:
7 amino acids
Question:
select the most accurate statement. the nucleus of a somatic human cells contain:
a)46 pairs of chromosomes
b)2 pairs of sex chromosomes
c)46 autosomes
d)46 chromosomes
Answer:
46 chromosomes
, Question:
select the correct statement:
a)a DNA open reading frame encoding a protein consists of a
start codon, followed by a series of codons and an in-frame stop codon
b)a DNA open reading frame encoding a protein consists of a
start codon, followed by a series of codons and an in-frame stop codon, and the downstream
terminator sequence
c)a DNA open reading frame encoding a protein consists of a
start codon, followed by a series of codons and an in-frame stop codon, the downstream terminator
sequence and the upstream promoter region
Answer:
a DNA open reading frame encoding a protein consists of a start codon, followed by a series of
codons and an in-frame stop codon
Question:
which one of the following statements is incorrect?
a) Natural selection is the propagation of a genetic variation
that provides a species with an advantage in its environment.
b) Natural selection is the elimination of a favorable genetic
variation from a species.
c) Natural selection in humans is an extremely slow process.
d) Genetic variation often leads to the changes in the
phenotype of an organism or species.
Answer:
Natural selection is the elimination of a favorable genetic variation from a species.
Question:
Which one of the following statements regarding autosomal alleles is incorrect?
a) Any given human somatic cell only has two alleles for a
given gene.
b) Different alleles of a specific gene often arise through
mutation of one of the gene copies.
c) More than one allele of the same gene can cause an
altered phenotype.
d) The alleles of a gene are found at different loci on the two
copies of the same autosome.
Answer:
The alleles of a gene are found at different loci on the two copies of the same autosome.
Question:
Select the correct statement. Mutations are:
a) Changes in the amino acid sequence of a protein.
b) Changes in the amino acid sequence of a gene
c) Changes in the nucleotide sequence of a gene.
d) Changes in the nucleotide sequence of a protein.
Questions with 100% Verified Answers | Latest Update
Question:
TTGCGGTACACAAATTCCACAGGTCTAATCTCGCT Which mRNA molecule would represent the
transcription of the DNA molecule shown above?
Answer:
AACGCCAUGUGUUUAAGGUGUCCAGAUUAGAGCGA
Question:
AACGCCAUGUGUUUAAGGUGUCCAGAUUAGAGCGA Which polypeptide is encoded by the DNA
molecule shown above?
Answer:
Met-Cys-Leu-Arg-Cys-Pro-Asp
Question:
TTGCGGTACACAAATTCCACAGGTCTAATCTCGCT If G is substituted for the underlined A on the DNA
template, this mutation would be classified as a:
Answer:
silent mutation
Question:
what is the length of the resultant polypeptide when the mutation in question 3 occurs? (silent
mutation)
Answer:
7 amino acids
Question:
select the most accurate statement. the nucleus of a somatic human cells contain:
a)46 pairs of chromosomes
b)2 pairs of sex chromosomes
c)46 autosomes
d)46 chromosomes
Answer:
46 chromosomes
, Question:
select the correct statement:
a)a DNA open reading frame encoding a protein consists of a
start codon, followed by a series of codons and an in-frame stop codon
b)a DNA open reading frame encoding a protein consists of a
start codon, followed by a series of codons and an in-frame stop codon, and the downstream
terminator sequence
c)a DNA open reading frame encoding a protein consists of a
start codon, followed by a series of codons and an in-frame stop codon, the downstream terminator
sequence and the upstream promoter region
Answer:
a DNA open reading frame encoding a protein consists of a start codon, followed by a series of
codons and an in-frame stop codon
Question:
which one of the following statements is incorrect?
a) Natural selection is the propagation of a genetic variation
that provides a species with an advantage in its environment.
b) Natural selection is the elimination of a favorable genetic
variation from a species.
c) Natural selection in humans is an extremely slow process.
d) Genetic variation often leads to the changes in the
phenotype of an organism or species.
Answer:
Natural selection is the elimination of a favorable genetic variation from a species.
Question:
Which one of the following statements regarding autosomal alleles is incorrect?
a) Any given human somatic cell only has two alleles for a
given gene.
b) Different alleles of a specific gene often arise through
mutation of one of the gene copies.
c) More than one allele of the same gene can cause an
altered phenotype.
d) The alleles of a gene are found at different loci on the two
copies of the same autosome.
Answer:
The alleles of a gene are found at different loci on the two copies of the same autosome.
Question:
Select the correct statement. Mutations are:
a) Changes in the amino acid sequence of a protein.
b) Changes in the amino acid sequence of a gene
c) Changes in the nucleotide sequence of a gene.
d) Changes in the nucleotide sequence of a protein.
