Question
- What are “molecular scissors”? Give one example.
- Explain their role in recombinant DNA technology.
✓
Answer
- Restriction enzymes EcoRI/Hind II,
- They recognise and cut at a specific sit on DNA.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write any four differences between bacteria and cyanobacteria.
Answer the following questions:
Would Western Ghats ecosystems be less functional if one of its tree frog species is lost forever? Substantiate your answer in the light of hypothesis proposed by Paul Ehrlich.
Would Western Ghats ecosystems be less functional if one of its tree frog species is lost forever? Substantiate your answer in the light of hypothesis proposed by Paul Ehrlich.
Why is that once a person starts taking alcohol or drugs, it is difficult to get rid of this habit? Discuss it with your teacher.
AtRNA is charged with the amino acid phenylalanine.
- At what end of the tRNA is the amino acid attached?
- What is the mRNA codon that codes for phenylalanine?
- Name the enzyme responsible for this attachment.
Why are beehives kept in crop field during flowering period? Name any two crop fields where this is practiced.
The zygote passes through several developmental stages till implantation, describe each stage briefly with suitable diagrams.
"The codon is a triplet and is read in a contiguous manner without punctuations." Provide the genetic basis for the statement.
Who proposed the term evolution? What is evolution? List the different evidences in support of evolution.
The image below shows two germinated seeds X and Y which belong to the same species. Seed X is produced by apomixis whereas seed Y is a product of sexual reproduction.
A. Write the number of embryo(s), embryo sac(s) and ovules in the ovary of seed X.
B. How multiples embryos are formed in citrus fruits?
C. What advantage will plants developed from seed Y have over seed X?
A. Write the number of embryo(s), embryo sac(s) and ovules in the ovary of seed X.
B. How multiples embryos are formed in citrus fruits?
C. What advantage will plants developed from seed Y have over seed X?
Differentiate between perisperm and endosperm by giving one example of each.