Question 1

In some animal species,like humans,sex is determined by:

Accepted Answer

A)  The presence of the Y chromosome 
B)  The number of X chromosomes in relation to the number of sets of autosomes 
C)  The size of the Y chromosome 
D)  None of these 
E)  All of these 
A)  The presence of the Y chromosome 
B)  The number of X chromosomes in relation to the number of sets of autosomes 
C)  The size of the Y chromosome 
D)  None of these 
E)  All of these

Question 2

Why is the Y chromosome able to pair with the X chromosome during meiosis?

Accepted Answer

A)  The Y chromosome has the same centromere placement as the X chromosome 
B)  The Y chromosome is the same length as the X chromosome 
C)  The X and Y chromosomes share small gene segments that allow them to act like homologues during meiosis 
D)  None of these 
E)  All of these 
A)  The Y chromosome has the same centromere placement as the X chromosome 
B)  The Y chromosome is the same length as the X chromosome 
C)  The X and Y chromosomes share small gene segments that allow them to act like homologues during meiosis 
D)  None of these 
E)  All of these

Question 3

A cell is stained and viewed under a microscope and no chromosomes are visible.Which point in the cell cycle is the cell currently in?

Accepted Answer

A)  Interphase 
B)  Prophase 
C)  Metaphase 
D)  Anaphase 
E)  Telophase 
A)  Interphase 
B)  Prophase 
C)  Metaphase 
D)  Anaphase 
E)  Telophase

Question 4

An individual with two kinds of gametes (i.e.X bearing and Y bearing)is referred to as:

Accepted Answer

A)  Homogametic 
B)  Heterogametic 
C)  Heterozygous 
D)  None of these 
E)  All of these 
A)  Homogametic 
B)  Heterogametic 
C)  Heterozygous 
D)  None of these 
E)  All of these

Question 5

Which of the following is a possible offspring in a mating between grasshoppers?

Accepted Answer

A)  XO male 
B)  XX female 
C)  XO female 
D)  XO male and XX female 
E)  XO male and XO female 
A)  XO male 
B)  XX female 
C)  XO female 
D)  XO male and XX female 
E)  XO male and XO female

Question 6

A(n)________________ gene has a locus on both the X-and Y-chromosome

Accepted Answer

A)  Autosomal 
B)  Psedoautosomal 
C)  X-linked 
D)  Y-linked 
E)  None of these 
A)  Autosomal 
B)  Psedoautosomal 
C)  X-linked 
D)  Y-linked 
E)  None of these

Question 7

An increase in the activity of X-linked genes in males,as is observed in Drosophila,is known as:

Accepted Answer

A)  Hypoactivation 
B)  Hyperactivation 
C)  Mosaicisn 
D)  None of these 
E)  All of these 
A)  Hypoactivation 
B)  Hyperactivation 
C)  Mosaicisn 
D)  None of these 
E)  All of these

Question 8

Why is it easier to identify a recessive sex-linked trait in human beings than a recessive autosomal trait?

Accepted Answer

A)  A male needs only to inherit one recessive allele to express an X-linked trait 
B)  A male needs to inherit two recessive alleles to express an X-linked trait 
C)  A female only needs to inherit one recessive allele to express an X-linked trait 
D)  All of these 
E)  None of these 
A)  A male needs only to inherit one recessive allele to express an X-linked trait 
B)  A male needs to inherit two recessive alleles to express an X-linked trait 
C)  A female only needs to inherit one recessive allele to express an X-linked trait 
D)  All of these 
E)  None of these

Question 9

Which of Mendel's principles is based on the separation of homologous chromosomes during the anaphase of the first meiotic division?

Accepted Answer

A)  Dominance/Recessiveness 
B)  Segregation 
C)  Independent Assortment 
D)  All of these 
E)  None of these 
A)  Dominance/Recessiveness 
B)  Segregation 
C)  Independent Assortment 
D)  All of these 
E)  None of these

Question 10

In a certain species,a somatic cell has 48 chromsomes.How many chromosomes are in a sex cell?

Accepted Answer

A)  12 
B)  24 
C)  96 
D)  144 
E)  200 
A)  12 
B)  24 
C)  96 
D)  144 
E)  200

In some animal species,like humans,sex is determined by:

Why is the Y chromosome able to pair with the X chromosome during meiosis?

A cell is stained and viewed under a microscope and no chromosomes are visible.Which point in the cell cycle is the cell currently in?

An individual with two kinds of gametes (i.e.X bearing and Y bearing)is referred to as:

Which of the following is a possible offspring in a mating between grasshoppers?

A(n)________________ gene has a locus on both the X-and Y-chromosome

An increase in the activity of X-linked genes in males,as is observed in Drosophila,is known as:

Why is it easier to identify a recessive sex-linked trait in human beings than a recessive autosomal trait?

Which of Mendel's principles is based on the separation of homologous chromosomes during the anaphase of the first meiotic division?

In a certain species,a somatic cell has 48 chromsomes.How many chromosomes are in a sex cell?

The Science Of Genetics

Cellular Reproduction

Mendelism The Basic Principles Of Inheritance

Extensions Of Mendelism

Variation In Chromosome Number And Structure

Linkage,Crossing Over,And Chromosome Mapping In …

The Genetics Of Bacteria And Their Viruses

DNA And The Molecular Structure Of Chromosomes

Replication Of DNA And Chromosomes

Transcription And RNA Processing

Translation And The Genetic Code

Mutation,DNA Repair,And Recombination

The Techniques Of Molecular Genetics

Genomics

Applications Of Molecular Genetics

Transposable Genetics Elements

Regulation Of Gene Expression In Prokaryotes

Regulation Of Gene Expression In Eukaryotes

The Genetic Control Of Animal Development

The Genetic Basis Of Cancer

Inheritance Of Complex Traits

Population Genetics

Evolutionary Genetics

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Exam 5: The Chromosomal Basis Of Mendelism

In some animal species,like humans,sex is determined by:

Why is the Y chromosome able to pair with the X chromosome during meiosis?

A cell is stained and viewed under a microscope and no chromosomes are visible.Which point in the cell cycle is the cell currently in?

An individual with two kinds of gametes (i.e.X bearing and Y bearing)is referred to as:

Which of the following is a possible offspring in a mating between grasshoppers?

A(n)________________ gene has a locus on both the X-and Y-chromosome

An increase in the activity of X-linked genes in males,as is observed in Drosophila,is known as:

Why is it easier to identify a recessive sex-linked trait in human beings than a recessive autosomal trait?

Which of Mendel's principles is based on the separation of homologous chromosomes during the anaphase of the first meiotic division?

In a certain species,a somatic cell has 48 chromsomes.How many chromosomes are in a sex cell?

The Science Of Genetics

Cellular Reproduction

Mendelism The Basic Principles Of Inheritance

Extensions Of Mendelism

Variation In Chromosome Number And Structure

Linkage,Crossing Over,And Chromosome Mapping In …

The Genetics Of Bacteria And Their Viruses

DNA And The Molecular Structure Of Chromosomes

Replication Of DNA And Chromosomes

Transcription And RNA Processing

Translation And The Genetic Code

Mutation,DNA Repair,And Recombination

The Techniques Of Molecular Genetics

Genomics

Applications Of Molecular Genetics

Transposable Genetics Elements

Regulation Of Gene Expression In Prokaryotes

Regulation Of Gene Expression In Eukaryotes

The Genetic Control Of Animal Development

The Genetic Basis Of Cancer

Inheritance Of Complex Traits

Population Genetics

Evolutionary Genetics

Filters