After industrialization in 1920 in England, the proportion of dark winged and white winged moths reversed because of:

Which one of the following diseases can be treated by human protein (a -1-
antitrypsin) produced by transgenic animals?

Read the passage carefully and answer the given questions.
Recombinant DNA Technology
Asexual reproduction preserves the genetic information, while sexual reproduction permits variation. Traditional hybridization procedures used in plants and animals breeding very often lead to inclusion and multiplication of undesirable genes along with the desired genes. The techniques of genetic engineering, which include creation of recombinant DNA, use of gene cloning and gene transfer, overcome this limitation and allow us to isolate and introduce only one or a set of desirable genes without introducing genes into the target organism.
What is the purpose of using a gene promoter in recombinant DNA technology?

Which one of the following plants is the source of cannabinoids commonly used in drug abuse?

To avoid the unfavourable conditions, the zooplanktons enter into :

Full form of ELISA is:

The process of copying the genetic information from one strand of DNA to RNA is termed as:

If A is any non-zero square matrix, then the matrix \(P=\frac{1}{2}\left(A-A^T\right)\) is:

The number of arbitrary constants in the general solution of a differential equation of order 4 and degree 1 is

The flocculating power of \(\left[ Fe ( CN )_6\right]^{4-}\) is higher than \(PO _4^{3-}\) ion because :

Answer the question on the basis of passage given below :
Living systems are made up of various complex bio-molecules like carbohydrates, proteins, nucleic acids, lipids etc. Proteins and carbohydrates are essential constituents of our food. Carbohydrates are primarily produced by plants and form a very large group of naturally occurring organic compounds. Some common examples are cane sugar, glucose, starch etc.
Which of the following is a structural component of starch?

The ratio of energies of photons produced due to the transition of an electron of hydrogen atom from its
i. second permitted energy level to the first level and
ii. the highest permitted energy level to the first energy level is

If the value of the refractive index of a denser medium with respect to the rarer medium is 1.414, then the critical angle is: