Cytogenetics Penetrance Expressivity Online Exam Quiz
Cytogenetics Penetrance Expressivity GK Quiz. Question and Answers related to Cytogenetics Penetrance Expressivity. MCQ (Multiple Choice Questions with answers about Cytogenetics Penetrance Expressivity
An individual with a homozygous genotype for a particular phenotype ____________ expresses the phenotype.
Options
A : Always
B : Never
C : Sometimes
D : Unknown relation
Which of the following trait shows only variation in expressivity?
Options
A : Brachydactyly
B : Osteoporosis imperfectica
C : Pea seed colour
D : Polydactyly
Expessivity doesn’t depend on which of the following factors?
Options
A : Environment
B : Penetrance
C : Genotype
D : Linkage
Choose the incorrect option about penetrance.
Options
A : If penetrance is 100% all recessive genotype shows one phenotype
B : If penetrance is 100% the expressivity is 100%
C : If penetrance is 100% all the heterozygotes have similar phenotype
D : If penetrance is 100% all the dominant genotypes have a different phenotype from recessive
Neurofibrilomatosis varies in ________________
Options
A : Penetrance
B : Expressivity
C : Both penetrance and expressivity
D : It is 100% penetrant and expressive
It is known that homozygous dominant gene for a type of cone gives brown colour. The formation of cones with brown, yellow colour expresses the _______________ and white expresses the _______________
Options
A : Penetrance, expressivity
B : Expressivity, genotype
C : Genotype, Phenotype
D : Expressivity, penetrance
If the gene is non-penetrant then which of the following is not right?
Options
A : The pedigree chart will not express the defecting phenotype in that individual
B : The person’s children are not likely to express that phenotype
C : The expressivity is 0%
D : The genotype here didn’t make its proper phenotypic expression
Expressivity depends on penetrance.
Options
A : True
B : False
C :
D :
Expressivity may be thought of as a result of different degrees of function of the protein encoded by the gene.
Options
A : True
B : False
C :
D :
The genes that Mendel worked with were__________________
Options
A : Variable in penetrance and expressivity
B : Variable in penetrance only
C : Variable in expressivity only
D : 100% penetrant with 100% expressivity
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