Cytogenetics Chromosomal Abnormalities Deletion Online Exam Quiz
Cytogenetics Chromosomal Abnormalities Deletion GK Quiz. Question and Answers related to Cytogenetics Chromosomal Abnormalities Deletion. MCQ (Multiple Choice Questions with answers about Cytogenetics Chromosomal Abnormalities Deletion
You hybridize two cells one of which carries a deletion mutation on chromosome 1. What will you expect to observe?
Options
A : Buckling of chromatin of 1st cell
B : Buckling of chromatin of 2nd cell
C : Twisting and loop formation between the two chromatins
D : No observable difference
Yellow colour of mouse is generated by _________ mutation.
Options
A : Duplication
B : Deletion
C : Inversion
D : Translocation
You generate a fluorescent probe against a gene that has been deleted. You expose the DNA to the probe and observe it under fluorescent microscope. What will you see?
Options
A : Fluorescence will correspond to the gene of interest
B : There will be a number of regions that emit fluorescence
C : Most parts of the chromosome emits fluorescence
D : Nothing is seen under fluorescence microscope
Which of the following is not a possible cause of lethality of individuals carrying a deletion mutation?
Options
A : Genes that are not haplo sufficient doesn’t produce adequate gene product
B : Genomic imbalance
C : Unmasking of lethal recessive alleles
D : Lack of diversity
The appearance of a recessive phenotype due to deletion of dominant gene is called_______________
Options
A : Hemi-dominance
B : Pseudo dominance
C : Imperfect dominance
D : Co-dominance
How will you recognize a terminal deletion from breakage and loss at the terminal end?
Options
A : Indistinguishable
B : Terminal break will lead to shorter chromosome than that due to chunk deletion
C : Terminal break will be sticky
D : Deletion will be recognized by trans factors
Which of the following is not true about the Notch gene in Drosophila?
Options
A : It causes a special indentation of the wing margin
B : It is expressed in heterozygous form
C : Notch is lethal in homozygous form
D : Notch is recessive to Facet
What will be the effect of the deletion mutation of a gene at the telomere?
Options
A : Organism will dye
B : Organism will develop serious hazards due to absence of the gene and its product
C : Mild effect on the phenotype
D : No effect
Deletion of a region led to over expression of a gene X. What do you conclude from this observation?
Options
A : Part of gene X is mutated
B : Promoter of gene X is deleted
C : Regulator of gene X is deleted
D : No effect on gene X or its regulators
Deletion in sex chromosome is better tolerated than that in autosome.
Options
A : True
B : False
C :
D :
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