Class 12th Biology 2018 Set1 Delhi Board Paper Solution
Question 25
State the ‘Central dogma’ as proposed by Francis Crick. Are there any exceptions to it? Support your answer with a reason and an example.
Answer
Francis crick explain that structural gene transcube to form RNA and the nuclectricle sequence of ROA are decoded into protein by the process of translate.
DNA → RNA → Protein
Popular Questions of Class 12th biology
- Q:- What is spermatogenesis? Briefly describe the process of spermatogenesis.
- Q:- Why is reproduction essential for organisms? Answer
- Q:- Write a short note on
(a) Adaptations of desert plants and animals
(b) Adaptations of plants to water scarcity
(c) Behavioural adaptations in animals
(d) Importance of light to plants
(e) Effect of temperature or water scarcity and the adaptations of animals. - Q:- With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.
- Q:- What is DNA fingerprinting? Mention its application.
- Q:- What is oogenesis? Give a brief account of oogenesis.
- Q:- Describe the structure of a seminiferous tubule.
- Q:- What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.
- Q:- With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
- Q:- Explain the Law of Dominance using a monohybrid cross.
Recently Viewed Questions of Class 12th biology
- Q:- Suggest some methods to assist infertile couples to have children.
- Q:- What is self-incompatibility? Why does self-pollination not lead to seed formation in self-incompatible species?
- Q:- Describe the components of an ecosystem.
- Q:- Discuss the role of fishery in enhancement of food production.
- Q:-
Practise drawing various animals and plants.
- Q:- Write important features of a sedimentary cycle in an ecosystem.
- Q:- Who had proposed the chromosomal theory of inheritance?
- Q:-
What is meant by monosporic development of female gametophyte?
- Q:- Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of phenotypic features in F1 generation for a dihybrid cross?
- Q:- Define decomposition and describe the processes and products of decomposition.