ANSC 221 EXAM 4 QUESTIONS WITH
100% CORRECT ANSWERS
Which of the following is primarily responsible for the maternal effect? - Answer-Nurse
cells
In the gene that affects snail coiling, the ______ is responsible for the phenotype of the
offspring. - Answer-mother's genotype
Who originally identified a highly condensed structure in the interphase of nuclei? -
Answer-Barr
Which of the following could NOT be used to describe a sex limited trait: - Answer-his
term refers to a trait controlled by a gene located on the X or Y chromosomes.
Which of the following events is LEAST likely to occur in a cross involving epistasis by
both genes? - Answer-A 9:3:3:1 ratio of F2 phenotypes is seen.
Sex limited inheritance refers to traits that are located on the X or Y chromosome. -
Answer-F
For genes which have multiple alleles, the relationships between those alleles can be a
variety of types of dominant/recessive relationships. - Answer-T
Where is extranuclear DNA located in mammalian cells? - Answer-Mitochondria
What type of inheritance is observed with extranuclear DNA? - Answer-Maternal
Inheritance
Which inheritance pattern is common to oogenesis, spermatogenesis, and
embryogenesis? - Answer-Epigenetic inheritance
How many Barr bodies would an individual with a XXY genotype possess? - Answer-1
The coat color of calico cats is a result of _____. - Answer-X-inactivation
The Lyon hypothesis attempts to explain the molecular mechanism of _____. - Answer-
X--inactivation
, Monoallelic expression is associated with which of the following? - Answer-Genomic
imprinting
Differentially methylated domains (DMDs) are associated with which of the following? -
Answer-Genomic imprinting
Which of the following is false regarding the mammalian mitochondrial genome? -
Answer-It is a linear chromosome
mtDNA contains all of the genes necessary for the complete function of mitochondrial
metabolism. - Answer-F
The inheritance of leaf pigmentation in the four-o'clock plant Mirabilis jalapa is an
example of ____. - Answer-maternal inheritance
In maternal effect, the _______ of the mother determines the _______ of the offspring. -
Answer-genotype; phenotype
A modification that occurs to a nuclear gene that alters gene expression without
modifying the DNA sequence is called _______ inheritance. - Answer-epigenetic
Dosage compensation offsets the problems associated with differences in the number
of _______ chromosomes in many species. - Answer-sex
The inheritance patterns of genetic material that is not contained in the nucleus of the
cell is called _______. - Answer-Extranucelar inheritance
Heteroplasmy is associated with inheritance patterns involving - Answer-chloroplasts
If the sperm cell contributes mitochondria to the oocyte, it is called _______ - Answer-
paternal leakage
Which of the following statements regarding epigenetic inheritance is FALSE? - Answer-
Epigenetic inheritance can temporarily affect an individual.
Which of the following statements regarding X inactivation in mammals is FALSE? -
Answer-This process ensures a homogenous phenotype in heterozygotes.
Which of the following statements regarding X inactivation in mammals is FALSE? -
Answer-This process ensures a homogenous phenotype in heterozygotes.
Monoallelic expression of a gene: - Answer-Occurs when the gene is imprinted.
Which of the following statements about nurse cells are true? - Answer-They are able to
express both alleles present in the female.
100% CORRECT ANSWERS
Which of the following is primarily responsible for the maternal effect? - Answer-Nurse
cells
In the gene that affects snail coiling, the ______ is responsible for the phenotype of the
offspring. - Answer-mother's genotype
Who originally identified a highly condensed structure in the interphase of nuclei? -
Answer-Barr
Which of the following could NOT be used to describe a sex limited trait: - Answer-his
term refers to a trait controlled by a gene located on the X or Y chromosomes.
Which of the following events is LEAST likely to occur in a cross involving epistasis by
both genes? - Answer-A 9:3:3:1 ratio of F2 phenotypes is seen.
Sex limited inheritance refers to traits that are located on the X or Y chromosome. -
Answer-F
For genes which have multiple alleles, the relationships between those alleles can be a
variety of types of dominant/recessive relationships. - Answer-T
Where is extranuclear DNA located in mammalian cells? - Answer-Mitochondria
What type of inheritance is observed with extranuclear DNA? - Answer-Maternal
Inheritance
Which inheritance pattern is common to oogenesis, spermatogenesis, and
embryogenesis? - Answer-Epigenetic inheritance
How many Barr bodies would an individual with a XXY genotype possess? - Answer-1
The coat color of calico cats is a result of _____. - Answer-X-inactivation
The Lyon hypothesis attempts to explain the molecular mechanism of _____. - Answer-
X--inactivation
, Monoallelic expression is associated with which of the following? - Answer-Genomic
imprinting
Differentially methylated domains (DMDs) are associated with which of the following? -
Answer-Genomic imprinting
Which of the following is false regarding the mammalian mitochondrial genome? -
Answer-It is a linear chromosome
mtDNA contains all of the genes necessary for the complete function of mitochondrial
metabolism. - Answer-F
The inheritance of leaf pigmentation in the four-o'clock plant Mirabilis jalapa is an
example of ____. - Answer-maternal inheritance
In maternal effect, the _______ of the mother determines the _______ of the offspring. -
Answer-genotype; phenotype
A modification that occurs to a nuclear gene that alters gene expression without
modifying the DNA sequence is called _______ inheritance. - Answer-epigenetic
Dosage compensation offsets the problems associated with differences in the number
of _______ chromosomes in many species. - Answer-sex
The inheritance patterns of genetic material that is not contained in the nucleus of the
cell is called _______. - Answer-Extranucelar inheritance
Heteroplasmy is associated with inheritance patterns involving - Answer-chloroplasts
If the sperm cell contributes mitochondria to the oocyte, it is called _______ - Answer-
paternal leakage
Which of the following statements regarding epigenetic inheritance is FALSE? - Answer-
Epigenetic inheritance can temporarily affect an individual.
Which of the following statements regarding X inactivation in mammals is FALSE? -
Answer-This process ensures a homogenous phenotype in heterozygotes.
Which of the following statements regarding X inactivation in mammals is FALSE? -
Answer-This process ensures a homogenous phenotype in heterozygotes.
Monoallelic expression of a gene: - Answer-Occurs when the gene is imprinted.
Which of the following statements about nurse cells are true? - Answer-They are able to
express both alleles present in the female.
