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

67. The AFLP technique generates polymorphic DNA fragments that are generally scored as dominant markers. However, a pair of DNA fragments (say ‘a’and ‘b’) generate by AFLP can be termed […]

66. The following represents selected AFLP bands (l to V) observed in parents (P1 and P2), Fl progeny and 20 doubled haploid (DH) progeny developed from the F1. DH are […]

64. Doubled haploids (DH) are plants derived from single immature pollen and doubled artificially to form diploids. A DH population was created from progeny derived from a cross between two […]

65. The figure below represents a profile of DNA markers in two parents (Pl and P 2), progeny (F1) from a cross between P1 and P2 and that of gametes […]

63. In 1990, Bhattacharya et al identified that the wrinkled seed character of pea as described by Mendel is caused by a transposon — like insertion in a gene encoding […]

62. Alleles A, a, B and b can be distinguished on the basis of their mobility on an agarose gel. These genes are present on the same chromosome. In the […]

61. The RFLP pattern observed for two pure parental lines (P1 and P2) and their F1 progeny is represented below. Further, the P1 plant had red flowers while the P2 […]

A pair of alleles govern seed size in a crop plant. ‘B’ allele responsible for bold seed is dominant over ‘b’ allele controlling small seed. An experiment was carried out […]

59. A new mutant called early ripening (EL) is identified in a plant. The wild type phenotype is late ripening (LR). Further DNA marker(s) is/are observed to be polymorphic between […]

58. Two homozygous individuals (Pl and P2), were genotyped using dominant DNA markers A and B, as shown below. The F1 progeny obtained was test crossed and frequency of progeny […]