Female oral contraceptive pill 'Saheli'  was developed by by Central Drug Research Institute Lucknow.

In order to analyse the genotype of an organism, it is made to cross with recessive plant not with dominant parent.This cross is called test cross.

IAA and cytokinin combination does cause differentiation of callus.

Based on the nature of coelom, round worms are pseudocoelomate with false coelom without mesodermal lining.

The heat stable enzyme used in PCR obtained from Thermophilous aquaticus bacteria is Taq polymerase.

ABA is a stress hormone. Abscisic acid appears to maintain winter dormancy in buds. It prevents seeds from germinating while still attached to the parent plant, and it inhibits stem elongation. Through its effects on stomatal opening, it also regulates gas and water exchange between leaves and the atmosphere.

Hemoglobin is a iron containing protein found in red blood cells.It carries respiratory gases.

Spleen is commonly known as the grave yard of RBC's because the majority of RBC's are destroyed by spleen.

Non coding sequence present within a structural gene is called introns.

Immunoglobulin G can cross the placenta.

Aldosterone is a mineralocorticoid that stimulates the kidney to conserve sodium and to excrete potassium.

Reverse transcriptase is responsible for the multiplication of human immuno virus in WBC of host .

Myocardium is thick and highly muscular layer of heart.

The pineal hormone melatonin is involved in controlling biological rhythms and photoperiodism.

Leydig cells in the testis secrete male sex hormone testosterone.

The base pair rule was proposed by Erwin Chargraff. According to Chargraff base pair rule, adenine pair with thymine, guanine with cytocine and vice versa.

The polymerase chain reaction amplifies specific DNA sequences.  

UCA is not a stop codon. UCA code for amino acid serine.

The famous Avena curvature test conducted by F.W. Went proves that shoot apex is the site for the synthesis of growth regulating substance.

Regulatory sequences controlling protein-coding genes in prokaryotes are called operon.

Broca's area, located in the frontal lobe just in front of the primary motor cortex, is essential for speech.

Ribozyme is not a protein enzyme.These are RNA, capable of catalytic activity.

The units in chromatin called nucleosomes consists of DNA wound around a histone core.

Oparin Haldane theory of chemical evolution is the most accepted theory about the origin of life .

Skeleton and muscles are originated from mesoderm.