Chromosomal Aberrations Quiz | Chromosomal Aberrations Objective Type Questions and Answers

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Questions
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

Answer: Chromosome 3
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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

Answer: No effect
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

Answer: Pseudo dominance
26 The haploid set of the chromosomes is called as
A Genome
B Proteome
C Genomics
D Genes

Answer: Genome
27 The term ‘chromosome (chrom=color, soma=body)’ was coined by
A Waldeyer
B W. Flemming
C Sutton
D W.Roux

Answer: Waldeyer
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

Answer: 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

Answer: Cladogram
32 In pericentric inversion, the inversion loop involves __________ strands.
A 4
B 0
C 7
D None

Answer: 4

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