Punnett Square was developed by:

The sex chromosomes of a female bird have:

The A and B polypeptides chains in insulin are linked together by which bond?

Which of the following techniques are used for early diagnosis of diseases?
(A). Urine analysis
(B). PCR
(C). ELISA
(D). Recombinant DNA technology (RDT)
Choose the correct answer from the options given below:

Which one of the followings is not the In situ conservation site ?

Read the given passage and answer the following questions:
Secondary treatment or biological treatment: The primary effluent is passed into large tanks where air is pumped into it. This allows vigorous growth of aerobic microbes. While growing, these microbes consume the major part of the organic matter in the effluent. This significantly change the BOD (biochemical oxygen demand) of the effluent. The effluent in then passed into a tank a small part of the sludge is pumped back into the aeration tank to serve as the inoculum. The remaining major part of the sludge is pumped into large tanks called sludge digesters. Here, other kinds of bacteria grow anaerobically in the sludge. The biogas produced can be used source of energy as it is inflammable. The effluent from the secondary treatment plant is generally released into natural water bodies like rivers and streams.
The greater the BOD of water

Which of the following contribute to increase in population density?

Answer the question on basis of passage given below :
Lyophobic sols like those of metals (Au, Ag, etc) are unstable and are easily precipitated by addition of electrolytes. However, it is observed that the addition of certain lyophilic colloids like gums, soaps, gelatine, etc. to lyophobic colloids (like a metal sol) render lyophobic colloids difficult to coagulate by the addition of electrolytes. The process is known as 'protection' and the lyophilic colloids are termed as Protective colloids. It is believed that the protective action of the lyophilic colloids is due to the covering up of the particles of the lyophobic colloid by those of the lyophilic colloid.
Evidently, smaller the gold number of a protective colloid, the greater is its protective action.
Which of the following has the highest flocculating power for a positive sol?

The 'lungs of the planet' name is given to :

Match the coordination compounds given in List-l with the central metal atoms given in List-ll

List-I (Coordination compound)	List-II (Central metal atom)
(A) blood pigment	(I) iron
(B) chlorophyll	(II) magnesium
(C) vitamin B12	(III) rhodium
(D) wilkinson catalyst	(IV) cobalt

Choose the correct answer from the options given below:

A copper ball of density \(8 ~ g / c c\) and \(1 c m\) diameter, immersed in oil of density 0.8 \(g / cc\), remains suspended in an electric field of \(600 \pi V / m\). The charge on the ball is :

Match List I with List - II

List - I	List - II
(A) Aneuploidy	(I) AB blood group
(B) Co-dominance	(II) Sex linked recessive disorder
(C) Pleiotropy	(III) Down's Syndrome
(D) Colourblindness	(IV) Phenylketonuria

Choose the correct answer from the options given below :

It is given that mean and variance of a binomial variate X are 2 and 1 respectively. Find the probability that X takes value greater than or equal to 1.