Biotechnology: Principles and Processes — BIOLOGY STD 12 Science — Question

What is speciation? List any two events leading to speciation.

Describe the structure of a nucleosome.

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

Write the use of the following in biotechnology.
Microinjection.

With respect to understanding diseases, discuss the importance of transgenic animal models.

If the Tropical rainforest would have been from the present 6% areas of earth to 12% areas how would the biodiversity be affected by it? Explain with reason.

Draw a well labelled diagram of a Graafian follicle.

What are transgenic animals? How was the first transgenic cow found to be more useful than the normal cow, for humans?

Which disease is diagnosed by Western blot test? Write the scientific name of the pathogen and four symptoms of this disease.

How does the application of cyanobacteria help improve agriculture output?