Question 1

The snipping out of specific introns is an example of what type of gene expression control?

Accepted Answer

A) transcriptional 
B) transcript processing 
C) transcript transport 
D) translational 
E) post translational 
A) transcriptional 
B) transcript processing 
C) transcript transport 
D) translational 
E) post translational

Question 2

The color distribution in the fur of calico cats results from

Accepted Answer

A) hybridization. 
B) a specific nutritional deficiency. 
C) a genetic defect. 
D) X chromosome inactivation. 
E) selective breeding. 
A) hybridization. 
B) a specific nutritional deficiency. 
C) a genetic defect. 
D) X chromosome inactivation. 
E) selective breeding.

Question 3

Which of the following statements is false concerning X chromosome inactivation?

Accepted Answer

A) It is an accident of evolution. 
B) It is an example of dosage compensation. 
C) It is a gene control mechanism. 
D) Normal development of female embryos depends on it. 
E) It does not occur in males. 
A) It is an accident of evolution. 
B) It is an example of dosage compensation. 
C) It is a gene control mechanism. 
D) Normal development of female embryos depends on it. 
E) It does not occur in males.

Question 4

The polytene chromosomes of certain insect larvae churn out copious amounts of gene products because

Accepted Answer

A) they are acetylated. 
B) they are methylated. 
C) they contain numerous side-by-side copies of genes. 
D) they have multiple promoter sites. 
E) their histones are only loosely associated with the DNA molecules. 
A) they are acetylated. 
B) they are methylated. 
C) they contain numerous side-by-side copies of genes. 
D) they have multiple promoter sites. 
E) their histones are only loosely associated with the DNA molecules.

Question 5

For the calico coloration in cats, which of the following is NOT true?

Accepted Answer

A) Orange color is on one X chromosome. 
B) Black color is on one X chromosome. 
C) White is the result of another gene that blocks all pigment production. 
D) The color white is found on the Y chromosome. 
E) It does not occur in males. 
A) Orange color is on one X chromosome. 
B) Black color is on one X chromosome. 
C) White is the result of another gene that blocks all pigment production. 
D) The color white is found on the Y chromosome. 
E) It does not occur in males.

Question 6

A mammalian female's

Accepted Answer

A) cells usually have multiple Barr bodies. 
B) body is a mosaic for the X-linked traits she inherits. 
C) Barr bodies are active in some cells. 
D) Barr bodies are produced after puberty. 
E) X-linked recessive genes are always expressed because of the deactivation of an X chromosome in each cell. 
A) cells usually have multiple Barr bodies. 
B) body is a mosaic for the X-linked traits she inherits. 
C) Barr bodies are active in some cells. 
D) Barr bodies are produced after puberty. 
E) X-linked recessive genes are always expressed because of the deactivation of an X chromosome in each cell.

Question 7

Genes on newly synthesized DNA molecules can be blocked by the addition of __________ to the DNA.

Accepted Answer

A) -CH3 
B) -CH3CO- 
C) -NH2 
D) -H2O 
E) any of these 
A) -CH3 
B) -CH3CO- 
C) -NH2 
D) -H2O 
E) any of these

Exam 15: Controls Over Genes

The snipping out of specific introns is an example of what type of gene expression control?

The color distribution in the fur of calico cats results from

Which of the following statements is false concerning X chromosome inactivation?

The polytene chromosomes of certain insect larvae churn out copious amounts of gene products because

For the calico coloration in cats, which of the following is NOT true?

A mammalian female's

Genes on newly synthesized DNA molecules can be blocked by the addition of __________ to the DNA.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters