Cytogenetics Chromosomal Abnormalities Duplication Online Exam Quiz
Cytogenetics Chromosomal Abnormalities Duplication GK Quiz. Question and Answers related to Cytogenetics Chromosomal Abnormalities Duplication. MCQ (Multiple Choice Questions with answers about Cytogenetics Chromosomal Abnormalities Duplication
Which human chromosomes are involved in Down’s syndrome?
Options
A : 6
B : 14 and 21
C : 8 and 12
D : X and Y
If there are two sequences CGCGCGCG and ATATATAT, which will have a higher probability of being duplicated?
Options
A : ATATATATAT
B : CGCGCGCGCG
C : Both will have equal probability
D : Both are unlikely to be duplicated
Tandem duplication creates ____________ and reverse tandem creates_____________
Options
A : Buckling, looping
B : Hairpin, buckling
C : Buckling, Hairpin
D : Loop with turn, hairpin
Which of the following could be due to duplication?
Options
A : Co-dominance
B : Dominance
C : Incomplete dominance
D : Pleiotropy
The Streisinger’s model explains__________
Options
A : Frame shifts
B : Transposition
C : Inversion
D : Transition
If a gene undergoes duplication and one of the duplicated copy is mutated to render unexpressed protein. What will be the effect on phenotype?
Options
A : Mutant phenotype
B : Normal phenotype
C : Expression of the mutant gene is less than that would occur if both copy active
D : The gene not expressed at all
Duplication of Vermillion eye colour gene leads to the expression of the mutant phenotype. Which of the following can lead to normal phenotype with this duplication present?
Options
A : Reverse tandem duplication
B : Duplication of normal eye colour gene
C : Deletion of both the Vermillion gene
D : Translocation of Vermillion gene to another chromosome
Which of the following case of duplication involves more than one chromosome?
Options
A : Tandem duplication
B : Reverse tandem duplication
C : Displaced
D : Transposed
During Strisinger’s model, what happens?
Options
A : The Ribosome slips which causes duplication
B : Parent strand slippage polymerase
C : Daughter strand slippage polymerase
D : The polymerase back tracks and resynthesizes
Which of the following will have the highest number of eye facete?
Options
A : Ultra bar female Drosophila
B : Heterozygous Bar male Drosophila
C : Heterozygous Bar female Drosophila
D : Homozygous bar Female
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