Human Reproduction — BIOLOGY STD 12 Science — Question

In 1983,_________ an American company prepared a series of two DNA sequences which were inserted into plasmid of _________ to produce insulin chains and these two chains were combined together to converted into human insulin by_________.

Zygote is __________ (diploid/haploid)

Till now more than _________ restriction enzymes have been discovered which have been isolated from more than _________ bacterial strains.

_________ is called Lungs of the earth.

Pollin grains developing in pollen sac are provided nourishment by_________.

ELISA technique works on the principle of _________.

_________ is a commonly used method for diagnosing HIV in suspected AIDS patients.

The homology in the bones of the forelimbs of whales, bats, cheetahs and humans reflects _________ evolution.

In human _________ extra embryonic membranes of embryo take part in placenta formation