Question 1

The genetic rearrangement that Barbara McClintock discovered was called _________ and the mobile genetic elements she discovered were called ________.

Accepted Answer

A) transposition,transposable elements 
B) transposable elements,transposition 
C) transference,transferable elements 
D) mutations,mutable elements 
E) transposition,transposables 
A) transposition,transposable elements 
B) transposable elements,transposition 
C) transference,transferable elements 
D) mutations,mutable elements 
E) transposition,transposables

Question 2

The backbone of a DNA molecule is _________.

Accepted Answer

A) made up of sugars alone 
B) made up of nitrogenous bases alone 
C) made up of phosphate groups alone 
D) made up of alternating phosphate and sugar groups 
E) made up of alternating sugars and nitrogenous bases 
A) made up of sugars alone 
B) made up of nitrogenous bases alone 
C) made up of phosphate groups alone 
D) made up of alternating phosphate and sugar groups 
E) made up of alternating sugars and nitrogenous bases

Question 3

Which of the following is an RNA nucleoside?

Accepted Answer

A) a phosphate group,adenine and ribose 
B) a phosphate group,guanine and deoxyribose 
C) cytosine and ribose 
D) thymine and deoxyribose 
E) a phosphate group and adenine 
A) a phosphate group,adenine and ribose 
B) a phosphate group,guanine and deoxyribose 
C) cytosine and ribose 
D) thymine and deoxyribose 
E) a phosphate group and adenine

Question 4

DNA sequences in bacteria that on rare occasions moved from one place in the genome to another are called ________.

Accepted Answer

A) movers 
B) jumpons 
C) transposons 
D) transpodons 
E) jumposons 
A) movers 
B) jumpons 
C) transposons 
D) transpodons 
E) jumposons

Question 5

How many chromosomes would a sexually-reproducing organism with 6 chromosomes in generation 0 have in generation 4 if there are reduction divisions in meiosis?

Accepted Answer

A) 6 
B) 12 
C) 24 
D) 48 
E) 96 
A) 6 
B) 12 
C) 24 
D) 48 
E) 96

Question 6

Hemoglobin molecules analyzed at various times during an animal's life seem to be highly variable.What is the explanation?

Accepted Answer

A) Contaminants at various points in an organism's life cause the variation in data. 
B) Hemoglobin denatures when isolated from older embryos. 
C) The combinations of of$\alpha$-family and $\beta$-family globin polypeptides differ with developmental stage. 
D) Hemoglobins are chemically altered as they age. 
E) Hemoglobins bind copper ions instead of iron ions. 
A) Contaminants at various points in an organism's life cause the variation in data. 
B) Hemoglobin denatures when isolated from older embryos. 
C) The combinations of of$\alpha$-family and $\beta$-family globin polypeptides differ with developmental stage. 
D) Hemoglobins are chemically altered as they age. 
E) Hemoglobins bind copper ions instead of iron ions.

Question 7

Transposase is an enzyme that __________.

Accepted Answer

A) degrades transposons 
B) builds transposons 
C) catalyzes transposon excision from a donor DNA site and its subsequent insertion at a target DNA site 
D) degrades target DNA 
E) rearranges transposon DNA 
A) degrades transposons 
B) builds transposons 
C) catalyzes transposon excision from a donor DNA site and its subsequent insertion at a target DNA site 
D) degrades target DNA 
E) rearranges transposon DNA

Question 8

____________ are sites in the genome that vary among different individuals.This term usually refers to a genetic variant that occurs in at least 1% of a species population.

Accepted Answer

A) Genetic variances 
B) Genetic anomalies 
C) Genetic polymorphisms 
D) Genetic polyploidisms 
E) Genetic polydactyly 
A) Genetic variances 
B) Genetic anomalies 
C) Genetic polymorphisms 
D) Genetic polyploidisms 
E) Genetic polydactyly

Question 9

What enzyme can create a transient break in one duplex of DNA that results in the relief of torsional stress via the rotation of one strand around the other?

Accepted Answer

This enzym

Question 10

The globin gene cluster contains stretches of DNA that are homologous to the sequences of functional globin genes,but contain severe accumulated mutations that render them nonfunctional.Most of these noncoding regions have no known function.They are considered to be evolutionary relics and are called _________.

Accepted Answer

A) reliquaries 
B) pseudoemissaries 
C) pseudogenes 
D) pseudoproteins 
E) pseudoglobins 
A) reliquaries 
B) pseudoemissaries 
C) pseudogenes 
D) pseudoproteins 
E) pseudoglobins

Question 11

Satellite DNAs have been localized to what location during in situ hybridization studies?

Accepted Answer

A) nucleolus 
B) centromere 
C) spindle 
D) mitochondria 
E) nucleosomes 
A) nucleolus 
B) centromere 
C) spindle 
D) mitochondria 
E) nucleosomes

Question 12

You isolate chromosomes from the salivary gland of an organism and prepare a glass slide of the chromosome preparation.When you look at the chromosomes on the slide,they can be seen to be extremely large and they exhibit a distinct banding pattern.What is a possible explanation for this?

Accepted Answer

The chromosomes are probably p

Question 13

Why are satellite DNAs called satellite DNAs?

Accepted Answer

A) They orbit the Earth. 
B) They form bands in a density gradient within the main band formed by the bulk of the genome. 
C) They form bands in a density gradient separate from the main band formed by the bulk of the genome. 
D) They form bands on an agarose gel separate from the main band formed by the bulk of the genome. 
E) They form small bands on an agarose gel within the main band formed by the bulk of the genome. 
A) They orbit the Earth. 
B) They form bands in a density gradient within the main band formed by the bulk of the genome. 
C) They form bands in a density gradient separate from the main band formed by the bulk of the genome. 
D) They form bands on an agarose gel separate from the main band formed by the bulk of the genome. 
E) They form small bands on an agarose gel within the main band formed by the bulk of the genome.

Question 14

A transposable element is a type of genetic parasite that can invade a host genome from the outside world,spread within the genome and be transmitted to offspring.Under what circumstances,would a transposable element not be able to accomplish this?

Accepted Answer

A) if it has serious adverse effects on the ability of the host to survive and reproduce 
B) if it does not have serious adverse effects on the ability of the host to survive and reproduce 
C) if it speeds up the activity of amylase 
D) if is slows down the activity of triosephosphate isomerase 
E) if it increases the rate at which an organism can sense time 
A) if it has serious adverse effects on the ability of the host to survive and reproduce 
B) if it does not have serious adverse effects on the ability of the host to survive and reproduce 
C) if it speeds up the activity of amylase 
D) if is slows down the activity of triosephosphate isomerase 
E) if it increases the rate at which an organism can sense time

The genetic rearrangement that Barbara McClintock discovered was called _ and the mobile genetic elements she discovered were called .

The backbone of a DNA molecule is _________.

Which of the following is an RNA nucleoside?

DNA sequences in bacteria that on rare occasions moved from one place in the genome to another are called ________.

How many chromosomes would a sexually-reproducing organism with 6 chromosomes in generation 0 have in generation 4 if there are reduction divisions in meiosis?

Hemoglobin molecules analyzed at various times during an animal's life seem to be highly variable.What is the explanation?

Transposase is an enzyme that __________.

____________ are sites in the genome that vary among different individuals.This term usually refers to a genetic variant that occurs in at least 1% of a species population.

What enzyme can create a transient break in one duplex of DNA that results in the relief of torsional stress via the rotation of one strand around the other?

Satellite DNAs have been localized to what location during in situ hybridization studies?

You isolate chromosomes from the salivary gland of an organism and prepare a glass slide of the chromosome preparation.When you look at the chromosomes on the slide,they can be seen to be extremely large and they exhibit a distinct banding pattern.What is a possible explanation for this?

Why are satellite DNAs called satellite DNAs?

A transposable element is a type of genetic parasite that can invade a host genome from the outside world,spread within the genome and be transmitted to offspring.Under what circumstances,would a transposable element not be able to accomplish this?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics,enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

Exam 10: The Nature of the Gene and the Genome

The genetic rearrangement that Barbara McClintock discovered was called _________ and the mobile genetic elements she discovered were called ________.

The backbone of a DNA molecule is _________.

Which of the following is an RNA nucleoside?

DNA sequences in bacteria that on rare occasions moved from one place in the genome to another are called ________.

How many chromosomes would a sexually-reproducing organism with 6 chromosomes in generation 0 have in generation 4 if there are reduction divisions in meiosis?

Hemoglobin molecules analyzed at various times during an animal's life seem to be highly variable.What is the explanation?

Transposase is an enzyme that __________.

____________ are sites in the genome that vary among different individuals.This term usually refers to a genetic variant that occurs in at least 1% of a species population.

What enzyme can create a transient break in one duplex of DNA that results in the relief of torsional stress via the rotation of one strand around the other?

Satellite DNAs have been localized to what location during in situ hybridization studies?

You isolate chromosomes from the salivary gland of an organism and prepare a glass slide of the chromosome preparation.When you look at the chromosomes on the slide,they can be seen to be extremely large and they exhibit a distinct banding pattern.What is a possible explanation for this?

Why are satellite DNAs called satellite DNAs?

A transposable element is a type of genetic parasite that can invade a host genome from the outside world,spread within the genome and be transmitted to offspring.Under what circumstances,would a transposable element not be able to accomplish this?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics,enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

The genetic rearrangement that Barbara McClintock discovered was called _ and the mobile genetic elements she discovered were called .