Tag: CSIR NET Life Science Previous Year Questions and Solution Genetics

41. In context of DNA methylation, which one of the following statements is FALSE? (1) Generally, methylation occurs at the 3rd carbon position of cytosine and converts it to 3-methyl […]

40. Criss-cross inheritance is shown by- (1) Sex linked traits (2) Sex influenced traits (3) Sex limited traits (4) Autosomes Criss-cross inheritance is shown by sex-linked traits, specifically genes located […]

Gene ‘A’ in mouse is needed for its normal growth [normal size). Mouse strains with deletion in gene ‘A’ (Adel) have been developed. When the following cross is made …..AdelA […]

38. Which one of the following statements is correct? (1) Epigenetic memory depends on DNA acetylation by trithorax group of proteins (2) An epigenetic change could be inherited from a […]

37. A mouse carrying two alleles of insulin-like growth factor II (igf2) is normal in size; whereas a mouse that carries two mutant alleles lacking the growth factor is dwarf. […]

36. Following statements were made about imprinting in the human genome. A. Imprinting control centre (lC) harbors part of the SNRPN gene. B. Imprinting of genes in an individual cannot […]

35. A gene inherited from mother is not expressed the offspring, but the same gene when inherited from father is expressed in both male and female offspring. This phenomenon is […]

34. In knockout mice experiment was performed for germline transmission of gene A, null allele from a male chimera shows retarded growth of all mutant heterozygotes. On inbreeding animals produced […]

33. The pattern of genomic imprinting is maintained from one generation to another by (1) Phosphorylation of DNA (2) Methylation of DNA (3) Acetylation of DNA (4) Glycosylation of DNA […]

32. Dosage compensation in mammal females is achieved by (1) Methylation of one X chromosome (2) Hyper activation of one X chromosome (3) Elimination of one X chromosome (4) Hypoactivation […]