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The following represents sequences of different alleles of a gene found in family represented by mother, (allele1/ allele2), father (allele1/allele 2) and their two sons: Son1 (allele1/allele 2) and Son […]

73. Microsatellite are used as marker for identifying individuals via DNA fingerprinting os the alleles may differ in the number of repeals. From the Southern blot shown below identify the […]

72. The pedigree given below follows the inheritance pattern of a late-onset (after age of 30 years) genetic disease that is 100% penetrant. Affected individuals are indicated by a solid […]

71. An analysis of four microsatellite markers was carried out in a family showing a genetic disorder. The results are summarized below Based on the above, which ot the markers […]

70. Sickle cell anemia is a recessive genetic disease caused due to a point mutation in the 6th codon abolishing one of the MspIIendonuclease digestion site present in the ß-globin […]

69. In normal individuals, there are three Mstll restrictionsites. two flanking the ß-globin gene and one within thegene. In individuals affected by a disease, a singlenucleotide polymorphism in the ß-globin […]

68. The following picture represents a gel profile of a pair of DNA markers observed P1 and P2, their F1 progeny and F2 progeny. Four different profiles were observed in […]

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 […]