Class 12th Biology 2016 Set2 Delhi Board Paper Solution
Question 4
Suggest the breeding method most suitable for animals that are below average in milk productivity.
Answer
Outcrossing method of breeding is employed in animals that are below average in milk productivity. It is the mating of animals within the same breed but having no common ancestors on either side of their pedigree upto 4-6 generations.
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:- What is pedigree analysis? Suggest how such an analysis, can be useful.
- Q:- Can you list 10 recombinant proteins which are used in medical practice? Find out where they are used as therapeutics (use the internet).
- Q:- In our society the women are often blamed for giving birth to daughters.
Can you explain why this is not correct? - Q:- Name the primary and secondary lymphoid organs.
- Q:- How does the progeny formed from asexual reproduction differ from those formed by sexual reproduction?
- Q:- If your family owned a dairy farm, what measures would you undertake to improve the quality and quantity of milk production?
- Q:- How does the transmission of each of the following diseases take place?
(a) Amoebiasis
(b) Malaria
(c) Ascariasis
(d) Pneumonia - Q:- What are the major functions of male accessory ducts and glands?
- Q:- Define ecological pyramids and describe with examples, pyramids of number and biomass.
- Q:- Explain what is meant by metastasis.