Question 1

Which type of chromosome has the shortest p arm of the chromosome?

Accepted Answer

A) Acrocentic 
B) Metacentric 
C) Telocentric 
D) Submetacentric 
A) Acrocentic 
B) Metacentric 
C) Telocentric 
D) Submetacentric

Question 2

Inversion loops can occur in

Accepted Answer

A) paracentric inversions. 
B) pericentric inversions. 
C) gene duplications. 
D) reciprocal translocations. 
E)  both paracentric inversions and pericentric inversions. 
A) paracentric inversions. 
B) pericentric inversions. 
C) gene duplications. 
D) reciprocal translocations. 
E)  both paracentric inversions and pericentric inversions.

Question 3

Trisomy 8 usually leads to early miscarriage of a fetus. However, adult individuals have been found with cells that have three copies of chromosome 8 in them. How can this be?

Accepted Answer

A) The trisomic 8 adults likely have a mosaic region with trisomy 8. 
B) The trisomic cells underwent complete nondisjunction. 
C) The trisomic cells underwent a meiotic nondisjunction. 
D) This individual must be triploid. 
A) The trisomic 8 adults likely have a mosaic region with trisomy 8. 
B) The trisomic cells underwent complete nondisjunction. 
C) The trisomic cells underwent a meiotic nondisjunction. 
D) This individual must be triploid.

Question 4

Polyploid plants tend to produce fewer fruits and flowers, be smaller in size, and not adapt as well to extreme environmental conditions as normal varieties.

Accepted Answer

A) True 
 B)False

Question 5

The salivary amylase gene (AMY1) is present in two diploid copies in chimpanzees. Humans are known to have between 6-15 copies, an adaptation that is thought to be related to the high-starch diet of humans. This difference among humans is an example of

Accepted Answer

A) G banding. 
B) copy number variation. 
C) a simple translocation. 
D) a reciprocal translocation. 
A) G banding. 
B) copy number variation. 
C) a simple translocation. 
D) a reciprocal translocation.

Question 6

Genetic abnormalities that occur before fertilization may result in some tissues of the body differing in their genetic composition. This is called mosaicism.

Accepted Answer

A) True 
 B)False

Question 7

Given the following sequence of genes on a chromosome, determine what change in chromosome structure occurred. (the * indicates the centromere) before A B C D * E F G H
After A B G F E * D C H

Accepted Answer

A) Reciprocal translocation 
B) Pericentric inversion 
C) Paracentric inversion 
D) Gene duplication 
E) None of the answers are correct 
A) Reciprocal translocation 
B) Pericentric inversion 
C) Paracentric inversion 
D) Gene duplication 
E) None of the answers are correct

Question 8

You perform comparative genomic hybridization. You correctly synthesize your red and green DNA, but you forget to treat the DNA with heat before you apply the samples to metaphase chromosomes. What will the ratio of green fluorescence to red fluorescence be?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) There will be no signal. 
A) 0 
B) 1 
C) 2 
D) There will be no signal.

Question 9

Familial Down syndrome is a result of

Accepted Answer

A) inversion. 
B) deficiency. 
C) gene duplication. 
D) translocation. 
A) inversion. 
B) deficiency. 
C) gene duplication. 
D) translocation.

Question 10

The common goldfish Carassius auratus has 100 chromosomes and is tetraploid. The goldfish therefore has _____ sets of chromosomes containing ______ chromosomes each.

Accepted Answer

A) 4; 25 
B) 2; 50 
C) 4; 100 
D) 1; 100 
A) 4; 25 
B) 2; 50 
C) 4; 100 
D) 1; 100

Which type of chromosome has the shortest p arm of the chromosome?

Inversion loops can occur in

Trisomy 8 usually leads to early miscarriage of a fetus. However, adult individuals have been found with cells that have three copies of chromosome 8 in them. How can this be?

Polyploid plants tend to produce fewer fruits and flowers, be smaller in size, and not adapt as well to extreme environmental conditions as normal varieties.

The salivary amylase gene (AMY1) is present in two diploid copies in chimpanzees. Humans are known to have between 6-15 copies, an adaptation that is thought to be related to the high-starch diet of humans. This difference among humans is an example of

Genetic abnormalities that occur before fertilization may result in some tissues of the body differing in their genetic composition. This is called mosaicism.

Given the following sequence of genes on a chromosome, determine what change in chromosome structure occurred. (the * indicates the centromere) before A B C D * E F G H After A B G F E * D C H

You perform comparative genomic hybridization. You correctly synthesize your red and green DNA, but you forget to treat the DNA with heat before you apply the samples to metaphase chromosomes. What will the ratio of green fluorescence to red fluorescence be?

Familial Down syndrome is a result of

The common goldfish Carassius auratus has 100 chromosomes and is tetraploid. The goldfish therefore has _ sets of chromosomes containing __ chromosomes each.

Overview of Genetics

Mendelian Inheritance

Chromosome Transmission During Cell Division and Sexual Reproduction

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria and Bacteriophages

Molecular Structure of DNA and RNA

Chromosome Organization and Molecular Structure

DNA Replication

Gene Transcription and RNA Modification

Translation of MRNA

Gene Regulation in Bacteria

Gene Regulation in Eukaryotes I: Transcriptional Regulation

Gene Regulation in Eukaryotes II: Epigenetics and Regulation at the RNA Level

Genetics of Viruses

Gene Mutation and Dna Repair

Recombination and Transposition at the Molecular Level

DNA Technologies

Biotechnology

Genomics I: Analysis of DNA

Genomics II: Functional Genomics, Proteomics, and Bioinformatics

Medical Genetics and Cancer

Developmental Genetics

Population Genetics

Quantitative Genetics

Evolutionary Genetics

Filters

Exam 8: Variation in Chromosome Structure and Number

Which type of chromosome has the shortest p arm of the chromosome?

Inversion loops can occur in

Trisomy 8 usually leads to early miscarriage of a fetus. However, adult individuals have been found with cells that have three copies of chromosome 8 in them. How can this be?

Polyploid plants tend to produce fewer fruits and flowers, be smaller in size, and not adapt as well to extreme environmental conditions as normal varieties.

The salivary amylase gene (AMY1) is present in two diploid copies in chimpanzees. Humans are known to have between 6-15 copies, an adaptation that is thought to be related to the high-starch diet of humans. This difference among humans is an example of

Genetic abnormalities that occur before fertilization may result in some tissues of the body differing in their genetic composition. This is called mosaicism.

Given the following sequence of genes on a chromosome, determine what change in chromosome structure occurred. (the * indicates the centromere) before A B C D * E F G H After A B G F E * D C H

You perform comparative genomic hybridization. You correctly synthesize your red and green DNA, but you forget to treat the DNA with heat before you apply the samples to metaphase chromosomes. What will the ratio of green fluorescence to red fluorescence be?

Familial Down syndrome is a result of

The common goldfish Carassius auratus has 100 chromosomes and is tetraploid. The goldfish therefore has _____ sets of chromosomes containing ______ chromosomes each.

Overview of Genetics

Mendelian Inheritance

Chromosome Transmission During Cell Division and Sexual Reproduction

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria and Bacteriophages

Molecular Structure of DNA and RNA

Chromosome Organization and Molecular Structure

DNA Replication

Gene Transcription and RNA Modification

Translation of MRNA

Gene Regulation in Bacteria

Gene Regulation in Eukaryotes I: Transcriptional Regulation

Gene Regulation in Eukaryotes II: Epigenetics and Regulation at the RNA Level

Genetics of Viruses

Gene Mutation and Dna Repair

Recombination and Transposition at the Molecular Level

DNA Technologies

Biotechnology

Genomics I: Analysis of DNA

Genomics II: Functional Genomics, Proteomics, and Bioinformatics

Medical Genetics and Cancer

Developmental Genetics

Population Genetics

Quantitative Genetics

Evolutionary Genetics

Filters

The common goldfish Carassius auratus has 100 chromosomes and is tetraploid. The goldfish therefore has _ sets of chromosomes containing __ chromosomes each.