Question
Which of the following method is most effective in
conferring disease resistance among distantly related species?Solution
Protoplast fusion is one of the methods that can be used to circumvent problems in introgression genes for resistance among distantly related species. By this method, factors that contribute to crossing barriers between species can be avoided and viable hybrids (Cybrids) have been recovered even between distantly related species.
The respective ages of a mother and her daughter are 45 and 13 years. In how many years will the mother be thrice as old as her daughter?
Present age of ‘A’ is 25% more than that of ‘B’. If 9 years hence from now, ‘B’ will be 6 years younger than ‘A’, then find the sum of p...
At present Meena is eight times her daughter’s age. Eight years from now, the ratio of the ages of Meena and her daughter will be 9 : 2 respective...
- The present age ratio of A to B is 4:5. After 8 years, the ratio of A’s age to P’s age will be 8:13. Additionally, the total of A’s, B’s, and P’s...
- The ratio of present ages of Rishi to that of Tarun is 3:4 while the ratio of present ages of Varun to that of Tarun is 5:4. If the age of Varun, 12 years ...
A’s age is 180% of what he was 5 years ago, But 90% of what it will be after 5 years. What is his present age?
Three years ago, the ages of Arnav and Bheema were in the ratio 3:4. Chinky’s current age is 33.33% greater than Arnav’s curr...
The ratio of the present age of A to that of B is 7:9. Six years ago the ratio of 1/3 of A’s age at that time and 1/3 of B’s age at that time was 1:...
- The ratio of the age of R after 3 years to the age of S after 6 years is 3:2. The total age of S and T after 10 years is 84 years. T’s age 6 years ago wa...
Twelve years from now, the combined ages of A and B will be 94 years. Eight years ago, the ratio of the total of A and B's ages to the age of C was 3:2...
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