Given below is a sample of a portion of DNA strand. What is so special shown in it? 5′ – GAATTC – 3′ 3′ – CTTAAG – 5′
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(a) Replication completed (b) Deletion […]
What is antisense technology?
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(a) A cell displaying a foreign antigen used for synthesis of antigens (b) Production of somaclonal variants in tissue cultures (c) When a piece of RNA that is […]
In maize, hybrid vigour is exploited by
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(a) crossing of two inbred parental lines (b) harvesting seeds from the most productive plants (c) inducing mutations (d) bombarding the seeds with DNA
Correct […]
An improved variety of transgenic basmati rice
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(a) does not require chemical fertilizers and growth hormones (b) gives high yield and is rich in vitamin A (c) is completely resistant to all insect […]
Consider the following four statements and select the option which includes all the correct ones only. (1) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc. (2) Body weight-wise […]
Which one of the following is a case of wrong matching
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(a) Somatic hybridization – Fusion of two diverse cells (b) Vector DNA -Site for t-RNA synthesis (c) Micropropagation – in vitro […]
Tissue culture technique can produce infinite number of new plants from a small parental tissue. The economic importance of the technique is in raising
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(a) Variants through picking up somaclonal variations (b) […]
In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called :
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(a) cross-hybridisation among the selected parents (b) evaluation […]
Consider the following four measures (A-D) that could be taken to successfully grow chickpea in an area where bacteri blight disease is common A)Spray with Bordeaux mixture B)Control of the insect vector of the disease […]
Which one of the following pairs of organisms are exotic species introduced in India ?
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(a) Lantana camara, water hyacinth (b) Water hyacinth, Prosopis cinereria (c) Nile perch, Ficus religiosa (d) Ficus […]
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