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

The _____ in a vector helps in identifying the transformants and eliminating the non-transformants.

_________ is the process of extraction of DNA from the separated bands of DNA in agarose gel.

The hollow foliar structure that encloses the leaf primordia in a grass embryo, is called ______.

The incidences of STPs are reported to be very high among persons in the age group of ____________ years.

Day ____________ of the menstrual cycle are called fertile period.

The secondary oocyte completes its meiosis II when a sperm comes in contact with it and forms a large cell, the _______ and a second polar body.

Dehydration and ________ of mature seeds are crucial for storage of seeds.

evolved into the first amphibians.

____________ methods work on the principle of avoiding the chances of meeting of ovum and sperm.

Cell-mediated immunity is provided by _______.