Class 12th Biology 2015 Set1 Delhi Board Paper Solution
Question 1
A geneticist interested in studying variations and patterns of inheritance in living beings prefers to choose organisms for experiments with shorter life cycle. Provide a reason.
Answer
A geneticist interested in studying variations and patterns of inheritance in living beings prefers to choose organisms with short life cycles for experiments because it enables the geneticist to study many generations of those organisms in their short lifespans.
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:- Differentiate between gametogenesis from embryogenesis.
- Q:- Draw a labeled diagram of male reproductive system.
- Q:- What is meant by the term breed? What are the objectives of animal breeding?
- Q:- What is the ecological principle behind the biological control method of managing with pest insects?
- Q:-
Practise drawing various animals and plants.
- Q:- Give an account of energy flow in an ecosystem.
- Q:- A diploid organism is heterozygous for 4 loci, how many types of gametes can be produced?
- Q:- What would be the molar concentration of human DNA in a human cell? Consult your teacher.
- Q:- How is diapause different from hibernation?
- Q:- How did Hershey and Chase differentiate between DNA and protein in their experiment while proving that DNA is the genetic material?