Cytogenetics Online Quiz Online Exam Quiz
Cytogenetics Online Quiz GK Quiz. Question and Answers related to Cytogenetics Online Quiz. MCQ (Multiple Choice Questions with answers about Cytogenetics Online Quiz
Lysonization takes place ____________
Options
A : 7th day after fertilization
B : 15th day after fertilization
C : 1st month after fertilization
D : 6th month after fertilization
If a chromosome loses its XIC due to deletion it will_______________________
Options
A : Always be activated
B : Never be activated
C : Form Barr body
D : Be degraded
The XXY klinefelter survive but trisomy in most autosome is lethal. Why?
Options
A : Autosome carries more genes
B : Autosomes have better dominant recessive relations
C : X chromosomes are inactivated
D : Autosomes are more in number
Tortoise shell or calico cats are always ________________ for O locus that is responsible for orange color development.
Options
A : Homozygous
B : Heterozygous
C : Deleterious
D : Duplication
Barr bodies are found ________________
Options
A : In the cytoplasm of female
B : In the nuclei of female
C : In the cytoplasm of male
D : In the nuclei of male
Calico cats are always______________
Options
A : Male
B : Female
C : Klinefelter
D : Turner
Both Drosophila and mammals have XY system of sex determination. Dosage compensation y inactivation of one X chromosome is seen in ___________________
Options
A : Mammals
B : Drosophila
C : Metaphase
D : Telophase
Due to the translocation process, the XIC from one X chromosome in a woman passed to chromosome 3. The individual died. What were the probable reasons of death?
Options
A : The X chromosome was unable to show its effect
B : Both X chromosome being active too much gene product was produced
C : Inactivation of chromosome 3
D : Hyper activation of autosomes
Which one of the following is true for Drosophila?
Options
A : They don’t have X chromosome
B : One of the female X chromosome is inactivated
C : The male Y chromosome is inactivated
D : The male X chromosome is hyper active
XIST mRNA coats the inactive X and calls in _____________
Options
A : tRNA and ribosome
B : Other mRNA
C : Deacetylase and specific methylase
D : Acetylase and demethylase
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