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Free download in PDF Chromosomal Aberrations Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(21)
Choose the wrong option.
[A]
Double cross over in paracentric inversion is lethal
[B]
There is genetic imbalance in gametes produced by paracentric inversion cross over
[C]
Paracentric inversion cross over products is non-viable
[D]
Pacentric non-cross over gametes segregates normally
Answer: Double cross over in paracentric inversion is lethal
(22)
Which of the following is an example of inversion?
[A]
Chromosome 14
[B]
Chromosome 3
[C]
Chromosome 22 and 9
[D]
Chromosome 8
(23)
What will be the effect of the deletion mutation of a gene at the telomere?
[A]
Mild effect on the phenotype
[B]
Organism will dye
[C]
No effect
[D]
Organism will develop serious hazards due to absence of the gene and its product
(24)
Which of the following is not a possible cause of lethality of individuals carrying a deletion mutation?
[A]
Lack of diversity
[B]
Genomic imbalance
[C]
Genes that are not haplo sufficient doesn’t produce adequate gene product
[D]
Unmasking of lethal recessive alleles
Answer: Lack of diversity
(25)
The appearance of a recessive phenotype due to deletion of dominant gene is called_______________
[A]
Hemi-dominance
[B]
DNA, RNA And Proteins
[C]
Imperfect dominance
[D]
Co-dominance
(26)
The haploid set of the chromosomes is called as
[A]
Genome
[B]
Proteome
[C]
Genomics
[D]
Genes
(27)
The term ‘chromosome (chrom=color, soma=body)’ was coined by
[A]
Waldeyer
[B]
W. Flemming
[C]
Sutton
[D]
W.Roux
(28)
Which of the following has the largest number of chromosome?
[A]
Giant redwood tree
[B]
Haplopappus gracilis
[C]
Pisum sativum
[D]
Ophioglossum reticulatum
Answer: Ophioglossum reticulatum
(29)
Which of the following statement is incorrect
[A]
In humans, there are 44 autosomes and a pair of sex chromosomes
[B]
In human females, there are 44 autosomes and a pair of homomorphic sex chromosomes
[C]
In human males, there are 44 autosomes and a pair of homomorphic sex chromosomes
[D]
In human males, there are 44 autosomes and a pair of heteromorphic sex chromosomes
Answer: In human males, there are 44 autosomes and a pair of homomorphic sex chromosomes
(30)
A functional chromosome has
[A]
An Origin Of Replication
[B]
A Centromere
[C]
A Telomere
[D]
All Of These
31
The diagrammatic representation of karyotype (morphological representation of chromosomes) of a species is called
[A]
Cladogram
[B]
Chromogram
[C]
Idiogram
[D]
Ecogram
32
In pericentric inversion, the inversion loop involves __________ strands.
[A]
4
[B]
0
[C]
7
[D]
None
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