Question 1

The pattern or sequence in which a molecule of mRNA is deciphered by a ribosome is called the

Accepted Answer

A)  synthesis platform. 
B)  code degeneration. 
C)  peptide transition. 
D)  reading frame. 
E)  strand polarity. 
A)  synthesis platform. 
B)  code degeneration. 
C)  peptide transition. 
D)  reading frame. 
E)  strand polarity. D

Question 2

In the modification of eukaryotic mRNA,a "cap" consisting of a/an _________ and a tail consisting of _______ are usually added to the transcript.

Accepted Answer

A)  acetyl group;multiple cytosines 
B)  multiple guanines;methyl group 
C)  multiple thymines;acetyl group 
D)  methyl group;multiple adenines 
E)  lipopolysaccharide;polypeptide 
A)  acetyl group;multiple cytosines 
B)  multiple guanines;methyl group 
C)  multiple thymines;acetyl group 
D)  methyl group;multiple adenines 
E)  lipopolysaccharide;polypeptide D

Question 3

What does reverse transcriptase do?

Accepted Answer

Reverse transcriptase is an enzyme that "transcribes" RNA into DNA.

Question 4

Charles Yanofsky helped decipher the genetic code working with the _____ biosynthesis genes in _______.

Accepted Answer

A)  leucine Salmonella enteritidis 
B)  phenylalanine Klebsiella pneumoniae 
C)  tryptophan Escherichia coli 
D)  glycine Serratia marcescens 
E)  lactose Escherichia coli 
A)  leucine Salmonella enteritidis 
B)  phenylalanine Klebsiella pneumoniae 
C)  tryptophan Escherichia coli 
D)  glycine Serratia marcescens 
E)  lactose Escherichia coli

Question 5

There are ______________ usually found in the genetic code.

Accepted Answer

A)  3 start codons and 1 stop codon 
B)  2 start codons and 2 stop codons 
C)  4 start codons and 1 stop codon 
D)  0 start codons and 4 stop codons 
E)  1 start codon and 3 stop codons 
A)  3 start codons and 1 stop codon 
B)  2 start codons and 2 stop codons 
C)  4 start codons and 1 stop codon 
D)  0 start codons and 4 stop codons 
E)  1 start codon and 3 stop codons

Question 6

Ectopic expression is when a protein is produced outside of its normal place or time.

Accepted Answer

A) True 
 B)False

Question 7

Which of these is NOT a character of the genetic code?

Accepted Answer

A)  All codons are the same length. 
B)  The code is used by nearly every living organism. 
C)  Some amino acids have multiple codons. 
D)  The code is degenerate. 
E)  There is the same number of codons as there are amino acids. 
A)  All codons are the same length. 
B)  The code is used by nearly every living organism. 
C)  Some amino acids have multiple codons. 
D)  The code is degenerate. 
E)  There is the same number of codons as there are amino acids.

Question 8

Describe how the "wobble" theory applies to protein synthesis.

Accepted Answer

In the genetic code,all but two amino ac

Question 9

In most splice donor sites a G U dinucleotide sequence is flanked by a couple of 5' and 3' purine bases.

Accepted Answer

A) True 
 B)False

Question 10

A neomorphic dominant mutation in the Antennapedia (Antp)gene of Drosophila causes

Accepted Answer

A)  kinks to form in their tails. 
B)  shortened tails. 
C)  total loss of colour vision. 
D)  failure to assemble microtubules during mitosis. 
E)  growth of a leg from the head region. 
A)  kinks to form in their tails. 
B)  shortened tails. 
C)  total loss of colour vision. 
D)  failure to assemble microtubules during mitosis. 
E)  growth of a leg from the head region.

Question 11

The appearance of a novel phenotype resulting from the substitution of a single base pair might be due to

Accepted Answer

A)  change in the amino acid sequence only. 
B)  change in the amount of protein expressed. 
C)  alteration in a gene that codes for a nontranslated RNA. 
D)  change in the developmental time or location at which a gene is expressed. 
E)  All of the choices are possible consequences of a single base pair substitution. 
A)  change in the amino acid sequence only. 
B)  change in the amount of protein expressed. 
C)  alteration in a gene that codes for a nontranslated RNA. 
D)  change in the developmental time or location at which a gene is expressed. 
E)  All of the choices are possible consequences of a single base pair substitution.

Question 12

A sequence of DNA that reads 5' ATGCCTGAATCAGCTTTA 3' should code for ____ amino acids after all the steps of conversion into protein are complete.

Accepted Answer

A)  5 
B)  6 
C)  7 
D)  8 
E)  9 
A)  5 
B)  6 
C)  7 
D)  8 
E)  9

Question 13

Describe the process of splicing in eukaryotic RNA molecules.

Accepted Answer

RNA processing is unique to eukaryotes.W

Question 14

A tRNA that recognizes a nonsense codon and inserts an amino acid where protein synthesis should have stopped is called a

Accepted Answer

A)  nonsense tRNA. 
B)  alternate tRNA. 
C)  revertant tRNA. 
D)  excision tRNA. 
E)  suppressor tRNA. 
A)  nonsense tRNA. 
B)  alternate tRNA. 
C)  revertant tRNA. 
D)  excision tRNA. 
E)  suppressor tRNA.

Question 15

A tRNA molecule looks like a compact ____ when it is folded into its functional configuration.

Accepted Answer

A)  G 
B)  L 
C)  C 
D)  P 
E)  W 
A)  G 
B)  L 
C)  C 
D)  P 
E)  W

Question 16

What is a null mutation?

Accepted Answer

Null mutat

Question 17

A bacterial (prokaryotic)ribosome is composed of ______ subunits.

Accepted Answer

A)  20S and 40S 
B)  30S and 50S 
C)  40S and 60S 
D)  50S and 70S 
E)  60S and 70S 
A)  20S and 40S 
B)  30S and 50S 
C)  40S and 60S 
D)  50S and 70S 
E)  60S and 70S

Question 18

A neomorphic mutation results in an allele that

Accepted Answer

A)  produces no gene product. 
B)  produces a nonfunctional gene product. 
C)  produces novel proteins or cause inappropriate expression resulting in a new phenotype. 
D)  produces proteins that aggregate with wild-type subunits,inactivating them. 
E)  produces an altered protein that results in a wild-type phenotype. 
A)  produces no gene product. 
B)  produces a nonfunctional gene product. 
C)  produces novel proteins or cause inappropriate expression resulting in a new phenotype. 
D)  produces proteins that aggregate with wild-type subunits,inactivating them. 
E)  produces an altered protein that results in a wild-type phenotype.

Question 19

What are silent,missense,and nonsense mutations? Compared to control wild-type samples,how would each mutation affect the outcome of Northern and Western analyses?

Accepted Answer

Silent mutations are gene mutations that

Question 20

Which of these processes are coupled (linked)in prokaryotes but NOT in eukaryotes?

Accepted Answer

A)  transcription and translation 
B)  replication and transcription 
C)  replication and translation 
D)  replication,transcription,and translation are not separate in prokaryotes. 
E)  reverse transcription and reverse translation 
A)  transcription and translation 
B)  replication and transcription 
C)  replication and translation 
D)  replication,transcription,and translation are not separate in prokaryotes. 
E)  reverse transcription and reverse translation

Exam 6: Anatomy and Function of a Gene: Dissection Through Mutation

The pattern or sequence in which a molecule of mRNA is deciphered by a ribosome is called the

In the modification of eukaryotic mRNA,a "cap" consisting of a/an _________ and a tail consisting of _______ are usually added to the transcript.

What does reverse transcriptase do?

Charles Yanofsky helped decipher the genetic code working with the _____ biosynthesis genes in _______.

There are ______________ usually found in the genetic code.

Ectopic expression is when a protein is produced outside of its normal place or time.

Which of these is NOT a character of the genetic code?

Describe how the "wobble" theory applies to protein synthesis.

In most splice donor sites a G U dinucleotide sequence is flanked by a couple of 5' and 3' purine bases.

A neomorphic dominant mutation in the Antennapedia (Antp)gene of Drosophila causes

The appearance of a novel phenotype resulting from the substitution of a single base pair might be due to

A sequence of DNA that reads 5' ATGCCTGAATCAGCTTTA 3' should code for ____ amino acids after all the steps of conversion into protein are complete.

Describe the process of splicing in eukaryotic RNA molecules.

A tRNA that recognizes a nonsense codon and inserts an amino acid where protein synthesis should have stopped is called a

A tRNA molecule looks like a compact ____ when it is folded into its functional configuration.

What is a null mutation?

A bacterial (prokaryotic)ribosome is composed of ______ subunits.

A neomorphic mutation results in an allele that

What are silent,missense,and nonsense mutations? Compared to control wild-type samples,how would each mutation affect the outcome of Northern and Western analyses?

Which of these processes are coupled (linked)in prokaryotes but NOT in eukaryotes?

Mendels Principles of Heredity

Extensions to Mendels Laws

The Chromosome Theory of Inheritance

Linkage, Recombination, and the Mapping of Genes on Chromosomes

Dna Structure, Replication, and Recombination

Gene Expression: the Flow of Information From Dna to Rna to Protein

Digital Analysis of Genomes

Genome Annotation

Analyzing Genomic Variation

The Eukaryotic Chromosome

Chromosomal Rearrangements and Changes in Chromosome Number

Bacterial Genetics

Organellar Inheritance

Gene Regulation in Prokaryotes

Gene Regulation in Eukaryotes

Manipulating the Genomes of Eukaryotes

The Genetic Analysis of Development

The Genetics of Cancer

Variation and Selection in Populations

Genetics of Complex Traits

Exploring Synthetic Biology: Concepts, Techniques, and Applications

Filters

In the modification of eukaryotic mRNA,a "cap" consisting of a/an ___ and a tail consisting of _ are usually added to the transcript.

Charles Yanofsky helped decipher the genetic code working with the _ biosynthesis genes in ___.