Natural selection operates in different ways in nature. Ans. Natural selection operates in differen…
Endosperm development precedes embryo development. Justify. Ans. Endosperm development precedes emb…
In a human female, probability of an ovum to get fertilized by more than one sperm is impossible. G…
Why could parasite not survive in a transgenie tobacco plant? Ans. Parasites may not survive in a t…
How do sense and anti-sense RNAs function? Ans. Sense and antisense RNAs function in the following …
Name the vector that is used to introduce nematode-specific genes into the host plant (tobacco) Ans…
Name the nematode scientific name) that infects the roots of tobacco plant and reduces its yield. A…
Why is insertional inactivation preferred over the use of selectable markers in cloning vectors? An…
A cloning vector does not have a selectable marker. How will it affect the process of cloning? Ans.…
State the role of ‘rop’ gene. Ans. The role of the 'rop' gene in the cloning vector pBR322: Regulat…
Name a species of mosquito other than female Anopheles and the disease, for which it carries the pa…
Explain the events which oceur within a female Anopheles mosquito after it has sucked blood from a …
