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Biotechnology Principles and Process
Can you recall meiosis and indicate at what stage a recombinant DNA is...

Can you recall meiosis and indicate at w | Class 12 Biology Chapter Biotechnology Principles and Process, Biotechnology Principles and Process NCERT Solutions

Welcome to the NCERT Solutions for Class 12 Biology - Chapter Biotechnology Principles and Process. This page offers a step-by-step solution to the specific question from Exercise 1, Question 8: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 8: Can you recall meiosis and indicate at what stage a recombinant DNA is made?

Answer:

Meiosis is a process that involves the reduction in the amount of genetic material. It is two types, namely meiosis I and meiosis II. During the pachytene stage of prophase I, crossing over of chromosomes takes place where the exchange of segments between non-sister chromatids of homlogous chromosomes takes place. This results in the formation of recombinant DNA.

Other Questions of Chapter Biotechnology Principles and Process

Q: Explain briefly
(a) PCR
(b) Restriction enzymes and DNA
(c) Chitinase

Q: From what you have learnt, can you tell whether enzymes are bigger or DNA is bigger in molecular size? How did you know?

While doing a PCR, ‘denaturation’ step is missed. What will be its effect on the process?

Q: Can you think and answer how a reporter enzyme can be used to monitor transformation of host cells by foreign DNA in addition to a selectable marker?

Q: Besides better aeration and mixing properties, what other advantages do stirred tank bioreactors have over shake flasks?

Q: Collect 5 examples of palindromic DNA sequences by consulting your teacher. Better try to create a palindromic sequence by following base-pair rules.

Q: Discuss with your teacher and find out how to distinguish between
(a) Plasmid DNA and chromosomal DNA
(b) RNA and DNA
(c) Exonuclease and Endonuclease

Q: What would be the molar concentration of human DNA in a human cell? Consult your teacher.

Q: Do eukaryotic cells have restriction endonucleases? Justify your answer.

Q: Can you list 10 recombinant proteins which are used in medical practice? Find out where they are used as therapeutics (use the internet).

Popular questions of class 12 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 12 Biology

Taking examples under each category, discuss upstream and downstream processing.

Name the first transgenic cow. Which gene was introduced in this cow?

Q: Diagrammatically represent the experimental steps in cloning and expressing an human gene (say the gene for growth hormone) into a bacterium like E. coli ?

Q: Explain what is meant by biofortification.

What is the main idea behind “Joint Forest Management Concept” introduced by the Government of India?

Q: List two essential roles of ribosome during translation.

Q: If a population growing exponentially double in size in 3 years, what is the intrinsic rate of increase (r) of the population?

Q: Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.)

Which type of food would have lactic acid bacteria. Discuss their useful application.

Give the full form of ELISA. Which disease can be detected using it? Discuss the principle underlying the test.

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

Read the question carefully and focus on the core concept being asked.
Reference examples and data from the chapter when answering questions about Biotechnology Principles and Process.
Review previous year question papers to get an idea of how such questions may be framed in exams.
Practice answering questions within the time limit to improve your speed and accuracy.
Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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Comments

Manasi H Kathe
Dec 10, 2019

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Shahbaz alam
Feb 14, 2018

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Farman khan
Aug 18, 2017

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Jul 08, 2017

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Mukesh Kumar chaurasiya
Jan 06, 2017

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Nov 20, 2016

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TARACHANDSAINI
Nov 02, 2015

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shivani sharma
Sep 22, 2015

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