Transgenic animals are used to understand the contribution of genes in the development of diseases such as:

What will be the number of genotypes and phenotypes obtained in \(F _2\) generation when male parent RRyy is crossed with female parent rrYY?

Which of the following area is India's one of the biodiversity hot spots ?

Arrange the steps of agarose gel electrophoresis in a correct sequence :
(A) Visualisation of DNA fragments under UV light
(B) Movement of the DNA fragments under electric field towards anode
(C) Loading the DNA in the wells
(D) Staining of DNA fragments with ethidium bromide
Choose the correct answer from the options given below :

Which one of the following cause of biodiversity loss is reflected in the phrase "need turns to greed"?

Which of the following statements are incorrect regarding food chain ?
(A) Primary carnivores are the tertiary consumers
(B) The flow of energy form the sun to producers and then to consumers is unidirectional
(C) The death of the organism is the initation of detritus food chain
(D) Plant are the primary consumers as they utilise the solar energy for making food
Choose the correct answer from the options given below:

Converting milk to curd improves its nutritional quality by increasing which of the following vitamins in it:

Which one of the following is NOT a method of molecular diagnosis for early detection of a disease?

Which of the following statements are correct?
A. Chlorine can show a maximum oxidation state of +3.
B. Deacon's process is oxidation of \(\text{HCl}\) in presence of \(\text{CuCl}_2\).
C. Chlorine on reacting with cold \(\text{NaOH}\) gives \(\text{NaOCl}\) not \(\text{NaOCl}_3\).
D. \(\text{ClF}_5\) has T shape.
E. \(\text{HCl}\) is a stronger acid than \(\text{HF}\).
Choose the correct answer from the options given below:

The vapour pressure of an aqueous solution of a non-volatile solute which boils at \(101.56^\circ C\) at \(25^\circ C\) will be (V.P. of pure water at \(25^\circ C\) is \(200\ mmHg\) and \(K_b\) for water is \(0.52\ K\ kg\ mol^{-1}\)):

The frequency of a photon whose energy is 66.3 eV would be
(Given \( h = 6.63 \times 10^{-34} \text{ Js} \))

Which of the following does not come under the category of colligative properties?

Read the passage carefully. Attempt the questions.
An overwhelming majority (99 per cent) of animals and nearly all plants cannot maintain a constant internal environment. Their body temperature changes with the ambient temperature. In aquatic animals, the osmotic concentration of the body fluids change with that of the ambient air and water osmotic concentration. These animals and plants are simply conformers. Considering the benefits of a constant internal environment to the organism, we must ask why these conformers had not evolved to become regulators. Recall the human analogy we used above; much as they like, how many people can really afford an air conditioner? Many simply 'sweat it out' and resign themselves to suboptimal performance in hot summer months. Very small animals are rarely found in polar regions. During the course of evolution, the costs and benefits of maintainin a constant internal environment are taken into consideration. Some species have evolved the ability to regulate, but only over a limited range of environmental conditions, beyond which they simply conform.
If the stressful external conditions are localised or remain only for a short duration, the organism has five other alternatives for survival.
Identify the set of aquatic animals whose osmotic concentration is not constant.