Cytogenetics Chromosomal Abnormality Inversion Online Exam Quiz
Cytogenetics Chromosomal Abnormality Inversion GK Quiz. Question and Answers related to Cytogenetics Chromosomal Abnormality Inversion. MCQ (Multiple Choice Questions with answers about Cytogenetics Chromosomal Abnormality Inversion
In pericentric inversion, the inversion loop involves __________ strands.
Options
A : 1
B : 2
C : 3
D : 4
Consider this sequence A—O—B —C—D—E—F, be a DNA sequence where O is the centromere. Which of the following will be a pericentric inversion?
Options
A : A—O—B—D—E—F
B : B—O—A—D—E—F
C : D—B—O—A—E—F
D : A—O—E—D—B—F
Which of the following is an example of inversion?
Options
A : Chromosome 22 and 9
B : Chromosome 8
C : Chromosome 14
D : Chromosome 3
Which of the following is not true about inversion?
Options
A : Inverted chromosomes are generally viable
B : Inversion can cause chromosome breakage
C : Two DNA strands with an inverted segment will not pair
D : Inversion including centromere is known as paracenric
Long pericentric inversions generally don’t act as cross over suppressors. Why?
Options
A : Long stretches of DNA recombination not recognized
B : Mechanism is different for short and long inversions
C : Two events of crossing over take place
D : Cross over product in this is viable
______________ inversions reduce crossing over in ______________
Options
A : Paracentric, Heterozygous
B : Pericentric, Heterozygous
C : Paracentric, homozygous
D : Pericentric homozygous
In drosophila male there is no cross over suppression due to pericentric inversion as___________
Options
A : They have only one set of chromosome
B : They always have double cross over
C : They never recombine
D : They don’t undergo meiosis
In Drosophila Crossing over in paracentric region is lethal and leads to cross-over suppression. This leads to reduction in fertility.
Options
A : True
B : False
C :
D :
What are the results of pericentric inversion with single crossing over?
Options
A : Two normal, one dicentric and one acentric chromosome
B : 2 dicentric and 2 acentric chromosomes
C : Four normal chromosomes with centriomere in different positions
D : 3 normal chromosome, one abnormal acentric chromosome
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