23. If both translocated arms in single translocation heterozygote moves to one pole, then segregation is called (1) Alternate (2) Adjacent (3) Linear (4) Uniform Explanation of options: (1) Alternate […]
Tag: CSIR NET Life Science Previous Year Questions and Solution Genetics
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CSIR NET Life Science Previous Year Questions and Solution on CHROMOSOMES ABERRATIONS
Meiotic consequences of reciprocal translocation in Burkitt’s lymphoma (t(8;14))
22. In Burkitt’sLymphoma a reciprocal translocation between chromosome 8 and 14 is observed. If an individual is heterozygous for this translocation, the consequence in meiosis Will be as follows: A. […]
CSIR NET Life Science Previous Year Questions and Solution on CHROMOSOMES ABERRATIONS
Cruciform chromosome structure in meiosis – which aberration causes it?
21. A cruciform structure of chromosome during meiosis is a characteristic feature of: (1) Translocation (2) Inversion (3) Deletion (4) Duplication Detailed explanation of options: Translocation – correct In a […]
CSIR NET Life Science Previous Year Questions and Solution on CHROMOSOMES ABERRATIONS
Which chromosome aberration changes gene order but not linkage group?
20. Which of the following illustrations explain the correct pairing preceding recombination between a chromosome (ABC•DEFG/ABC•DEFG) and its inverted homologue (ABC•DGFE/ABC•DGFE). The dot in genotype represent the centromere. Concept A […]
CSIR NET Life Science Previous Year Questions and Solution on CHROMOSOMES ABERRATIONS
Which chromosome aberration changes gene order but not linkage group?
19. A chromosome aberration leads to change in the order of genes in a genetic map but does not alter its linkage group. This is due to (1) translocation. (2) […]
CSIR NET Life Science Previous Year Questions and Solution on CHROMOSOMES ABERRATIONS
Meiotic consequences of a homozygous paracentric inversion
18. An individual is having a paracentricinversion (denoted by the region f-e-d, marked by arrows) in homozygous condition. The meiotic consequences of inversion can be: A. generation of an acentric […]
CSIR NET Life Science Previous Year Questions and Solution on CHROMOSOMES ABERRATIONS
Risk of disability from a pericentric inversion heterozygote when crossing over is 26%
17. Fertilization of gametes containing chromosome with duplication or deletion often results in children with disabilities. What is the probability of a couple where the male is karyotypically normal and […]
CSIR NET Life Science Previous Year Questions and Solution on CHROMOSOMES ABERRATIONS
Meiotic consequences of inversions and why they suppress crossing over
16. When gamete formation occurs in individuals heterozygous for an inversion, some of the following possibilities may occur: A. A pericentric inversion heterozygote results in an acentric and a dicentric […]
CSIR NET Life Science Previous Year Questions and Solution on CHROMOSOMES ABERRATIONS
Paracentric inversion crossover
15. An individual is having an inversion in heterozygous condition. The regions on normal chromosome are marked as A, B, C, D, E, F, G while the chromosome having inversion […]
CSIR NET Life Science Previous Year Questions and Solution on CHROMOSOMES ABERRATIONS
Which chromosomal change can move a gene to a new linkage group?
14. A mechanism that can cause a gene to move from one linkage group to another is (1) crossing over (2) inversion (3) translocation (4) duplication Concept: linkage groups and […]
