Biology
Grade-10
Easy
Question
Which of the following is INCORRECT about penetrance?
All recessive genotypes show one phenotype if penetrance is 100%.
The expressivity is 100% if penetrance is 100%.
All heterozygotes will have a similar phenotype if penetrance is 100%.
All dominant genotypes will have a different phenotype from recessive if penetrance is 100%.
All recessive genotypes show one phenotype if penetrance is 100%.
The expressivity is 100% if penetrance is 100%.
All heterozygotes will have a similar phenotype if penetrance is 100%.
All dominant genotypes will have a different phenotype from recessive if penetrance is 100%.
Hint:
The expressivity is 100% if penetrance is 100%
The correct answer is: The expressivity is 100% if penetrance is 100%.
In case of penetrance being 100% it makes sure that a particular phenotype is expressed in all individuals. But the limit to which it is expressed in the different individuals can vary so the expressivity may not be 100%.
Penetrance is the percentage of animals of a specific genotype who express the phenotype associated with that underlying genotype. Expressivity refers to the degree that a particular genotype is expressed as a phenotype within an individual.
Related Questions to study
Biology
If in mice the Igf2 gene gets deleted from a female parent, then the progeny will _____________.
If in mice the Igf2 gene gets deleted from a female parent, then the progeny will _____________.
BiologyGrade-10
Biology
How many imprinted genes have been identified in humans?
How many imprinted genes have been identified in humans?
BiologyGrade-10
Biology
Genomic imprinting leads to the ____________ of a particular allele of certain genes.
Genomic imprinting leads to the ____________ of a particular allele of certain genes.
BiologyGrade-10
Biology
The full form of Igf2 is
The full form of Igf2 is
BiologyGrade-10
Biology
The imprint made up of methyl groups are added to one of the alleles on which nucleotide?
The imprint made up of methyl groups are added to one of the alleles on which nucleotide?
BiologyGrade-10
Biology
Polydactyly in humans is an example of
Polydactyly in humans is an example of
BiologyGrade-10
Biology
When all individuals in a group carry a certain genotype that exhibits the same phenotype, it is known as
When all individuals in a group carry a certain genotype that exhibits the same phenotype, it is known as
BiologyGrade-10
Biology
The imprints are made up of ____________ groups.
The imprints are made up of ____________ groups.
BiologyGrade-10
Biology
In Igf2 gene in mice, only ______________ allele is expressed.
In Igf2 gene in mice, only ______________ allele is expressed.
BiologyGrade-10
Biology
The differential expression of genetic material relying on its parental origin of inheritance gives
The differential expression of genetic material relying on its parental origin of inheritance gives
BiologyGrade-10
Biology
The alterations that occur in DNA sequences are called ___________.
The alterations that occur in DNA sequences are called ___________.
BiologyGrade-10
Biology
Genomic imprinting in mammals is seen in _____ percent of the genes?
Genomic imprinting in mammals is seen in _____ percent of the genes?
BiologyGrade-10
Biology
Which of the following is NOT a symptom of Marfan syndrome?
Which of the following is NOT a symptom of Marfan syndrome?
BiologyGrade-10
Biology
__________ is the unit of heredity.
__________ is the unit of heredity.
BiologyGrade-10
Biology
The following picture represents a symptom of:
The following picture represents a symptom of:
BiologyGrade-10
