Which of the following are autosomal recessive trait/ disorder?
(A) Thalassemia
(B) Haemophilia
(C) Sickle cell anaemia
(D) Phenylketonuria
Choose the correct answer from the options given below:

Which one of the following is not practiced in the organic farming?

Recombinant DNA is directly injected into the nucleus of an animal cell. This method is known as-

Study the following figure and answer the questions:

Charging of tRNA is also known as

If in a forest there were 570 sambhars last year and through reproduction 30 new sambhars were added, taking the current population to 600.
Calculate the birth rate.

Which one of the followings has the ability to transform normal cells into cancerous cells in animals?

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.

The value of \(\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}}\left(x^3+x \cos x+\tan ^5 x\right) d x\) is:

Consider the LPP
\(\operatorname{Min} Z = x - y\), subject to the conditions
\(\begin{array}{l}x+y \leq 3 \\y-x \geq 1\end{array}\)
\(x \geq 0, y \geq 0\), then minimum value of objective function exists at the point :

The probability distribution of a random variable X is given by

X	0	1	2
P(X)	\(1-7 a^2\)	\(\frac{1}{2} a+\frac{1}{4}\)	\(a^2\)

If \(a>0\), then P\((0< x \leq 2\)) is equal to

Who discovered that the behaviour of chromosomes was parallel to the behaviour of genes ?

When sodium chromate is acidified with sulfuric acid and then further treated with potassium chloride, we obtain…

The values of 'a' for which the vectors \(\vec{\alpha}=\hat{i}+2 \hat{j}+\hat{k}, \vec{\beta}=a \hat{i}+\hat{j}+2 \hat{k}\) and \(\vec{\gamma}=\hat{i}+2 \hat{j}+a \hat{k}\) are coplanar are: