The tumor inducing capacity of Agrobacterium - tumaefaciens is located in large extra chromosomal plasmids called
- pBR 322
- Ti plasmid
- Ri plasmid
- lambda phage
The Correct Option is B
Solution and Explanation
Answer (b) Ti plasmid
Ti- plasmid. It is the tumour inducing plasmid and is a circular DNA molecule that is found in the strains of Agrobacterium tumefaciens. It will help in the transfer of the genetic material into the genome of the plants. The plasmid also have oncogenes that cause the abnormal growth of the galls in the infected plants and also the virulence genes. These genes help in the interaction between the bacteria and the plants.
Top KCET Biology Questions
- Relate Column I with Column II with regard to predatory behaviour:
Column I Column II 1. Calotropis p. Invertebrates 2. Pisaster q. Distasteful 3. Monarch butterfly r. Cryptically colored 4. Frogs s. Cardioglycoside - Small mammals and birds are rarely found in polar regions. The reason is that
Match Column I and Column I
Column I Column II 1 Narrowly utilitarian argument p Conserving biodiversity for major ecosystem services 2 Broadly utilitarian argument q Every species has an intrinsic value and moral duty to pass our biological legacy in good order to future generation. 3 Ethical argument r Receiving benefits like food, medicine & industrial products. - Identify the correct statement/s about ex situ conservation. Advanced ex situ conservation includes i. Cryopreservation of gametes. ii. Plant tissue culture method. iii. Seed bank. iv. In vitro fertilisation.
- Identify the odd one out.
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- DNA polymerase of Thermus aquaticus is
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Concepts Used:
DNA Replication
The process by which the genome’s DNA is copied in cells is called DNA Replication. It must first copy (or replicate) its entire genome before cell division so that each resulting daughter cell ends up with its own complete genome.
It is the natural cycle of creating two indistinguishable imitations of DNA from one unique DNA molecule. DNA replication happens to take all things together living creatures going about as the most core part for organic legacy. This is important for cell division during the development and fixation of harmed tissues, while it likewise guarantees that every one of the new cells gets its duplicate of the DNA. The phone has the unmistakable property of division, which makes replication of DNA fundamental.
The parental DNA stays together, and the recently shaped daughter strands are together in conservative replication. The semi-conservative strategy recommends that every one of the two parental DNA strands goes about as a format for new DNA to be integrated; after that each two-fold abandoned DNA incorporates one "old" strand (parental) and one "new" strand.