71. Consider the following statements regarding the theory of linkage and choose the correct answer:
1. Genes are arranged in a linear fashion in the chromosomes
2. Genes that show linkage are situated in the chromosome
3. Linked genes remain in their original combination during the course of inheritance
4. The genes which are widely separated show strong linkage, while those closely located, have more chances to get separated by crossing over
1. Genes are arranged in a linear fashion in the chromosomes
2. Genes that show linkage are situated in the chromosome
3. Linked genes remain in their original combination during the course of inheritance
4. The genes which are widely separated show strong linkage, while those closely located, have more chances to get separated by crossing over
72. Which of the following is not a Mendelian disorder?
73. Failure of segregation of chromatid during cell division cycle results in the gain or loss of chromosome which is called
74. Who among the following showed that the animal and vegetable broths boiled for several hours and immediately sealed were never infested with microorganisms and disproved the spontaneous generation of microorganisms?
75. According to which mode of replication, of the two double helices of DNA formed one would be entirely of old material and the other entirely of new material?
76. Consider the following statements regarding chain elongation during DNA synthesis and choose the correct answer:
1. The separated strands are kept open by DNA binding proteins (DBPs)
2. A DNA chain is initiated on the 3'- OH end of the primer
3. Okazaki fragments are synthesized on one strand; there is continuous DNA synthesis in the other strand
4. Okazaki fragments are joined by endonuclease
1. The separated strands are kept open by DNA binding proteins (DBPs)
2. A DNA chain is initiated on the 3'- OH end of the primer
3. Okazaki fragments are synthesized on one strand; there is continuous DNA synthesis in the other strand
4. Okazaki fragments are joined by endonuclease
77. Cytological studies reveal that only those allelomorphs assort independently during meiosis which are located in
78. The addition or deletion of one or more bases in the coding region of a gene usually results in what are called as
79. In E. coli, the origin of DNA replication, Ori C occupies the place between the sites of genes
80. The percentage of total recombinants represents, in map units,
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