71. Which of the following statements about DNA is/are correct?
1. DNA is the hereditary material of all living organisms.
2. All segments of DNA code for synthesis of proteins.
3. Nuclear DNA is double helical with two nucleotide chains which run anti-parallel.
4. DNA is also found in mitochondria.
Select the correct answer:
1. DNA is the hereditary material of all living organisms.
2. All segments of DNA code for synthesis of proteins.
3. Nuclear DNA is double helical with two nucleotide chains which run anti-parallel.
4. DNA is also found in mitochondria.
Select the correct answer:
72. Sterility in autopolyploids is usually due to
73. Of the total number of genes inherited by a child
74. Plant tissue cultures generally grow best at
75. A nonsense code
76. Because of the purine-pyrimidine pairing the total number of purines in a double stranded DNA molecule is
77. Such cases in which linked genes are transmitted together to the offsprings only in their original or parental combination for two or more or several generations exhibit
78. A purine molecule consists of which of the following joined to a pyrimidine ring at positions 4' and 5'?
79. The entire seedling formed by the activity of the plumular pole of the embryo is through the process of
80. According to which of the following theories, multiple alleles do not represent gene mutations at a given locus but they occupy different loci which lie in close association in a chromosome?
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