Which one of the following genetic law is responsible for 3:1 expression of the phenotypic ratio in \(F_1\) generation?

Arrange the steps in correct order for somatic hybridization.
(A). Isolated protoplasm are fused together
(B). Isolate the protoplasts from a single cell of different plants
(C). Digest the cell wall to isolate the protoplasts
(D). Hybrid protoplasts grown to form new plants
Choose the correct answer from the options given below:

In the process of protein synthesis the amino acids bind to tRNA at:

Identify the statement which do not hold true for Deoxyribose Nucleic Acid.
A. Only purine bases are present in DNA.
B. Deoxyribose sugar is present
C. A nitrogenous base is linked to the 1'C pentose sugar through N glycosidic linkage.
D. Phosphate group is linked to OH of 4'C of a nucleotide.
Choose the correct answer from the options given below:

Common cold is caused by:

Read the given paragraph carefully and answer the following questions:
Since the DNA is enclosed within the membranes, we have to break the cell open to release DNA along with other macromolecules such as RNA, proteins, polysaccharides and also lipids. This can be achieved by treating the bacterial cells/plant or animal tissue with enzymes such as lysozyme (bacteria), cellulase (plant cells), chitinase (fungus). There are some basic steps in genetically modifying an organism (i) identification of DNA with desirable genes; (ii) introduction of the identified DNA into the host; (iii) maintenance of introduced DNA in the host and transfer of the DNA to its progeny. Agrobacterium tumifaciens, a pathogen of several dicot plants is able to deliver a piece of DNA known as 'T-DNA' to transform normal plant cells into a tumor and direct these tumor cells to produce the chemicals required by the pathogen. Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol. Selection of recombinants due to inactivation of antibiotics is a cumbersome procedure because it requires simultaneous plating on two plates having different antibiotics. Therefore, alternative selectable markers have been developed which differentiate recombinants from non-recombinants on the basis of their ability to produce colour in the presence of a chromogenic substrate. In this, a recombinant DNA is inserted within the coding sequence of an enzyme, ß'-galactosidase. This results into inactivation of the gene for synthesis of this enzyme, which is referred to as insertional inactivation.
Agrobacterium tumefaciens, a pathogen of several dicot plants, is able to deliver a piece of DNA known as:

Transmission of HIV infection occurs by:
(A) By transfusion of contaminated blood
(B) By sharing infected needles
(C) Sexual contact with HIV infected person
(D) From an infected mother to her child through the placenta
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If \(\operatorname{det}\left(\begin{array}{cc}2 x & 5 \\ 8 & x\end{array}\right)=\operatorname{det}\left(\begin{array}{cc}6 & -2 \\ 1 & 1\end{array}\right)\), then the value of \(x\) is

Choose the incorrect statements from the options given below:
(A) If a monochromatic source is replaced by a source of white light in Young's experiment, then interference fringes will be coloured,
(B) If the screen is moved away from the plane of slits, then the angular width of the fringe will not remain the same,
(C) If separation between slits in Young's experiment is halved, the fringe width becomes double,
(D) The fringe width in Young's experiment is \( \lambda d/D \)
Choose the correct answer from the options given below:

Match List-l with List-II:

List-I (Structures)	List-II (Functions)
(A) Filiform apparatus	(I) Made up of sporopollenin
(B) Tapetum	(II) Attachment of ovule to the placenta
(C) Exine	(III) Guides pollen tube into the synergid
(D) Funicle	(IV) Nourishes the pollen grain

Choose the correct answer from the options given below:

Ten bulbs are drawn successively with replacement from a lot containing \(10 \%\) defective bulbs. The probability that there is at least one defective bulb is :

Other than absorption of phosphorus from soil, Glomus gives other benefits to plants like:
A. Addition of organic matter to the soil.
B. Resistance to root borne pathogens.
C. Tolerance to salinity
D. Increase in soil fertility
E. Tolerance to drought
Choose the correct answer from the options given below:

Identify the statements which are incorrect with respect to ribosomes
(A) Ribosome translates the mRNA from its 3' to 5' end.
(B) In its inactive state, ribosome exists as two separate subunits.
(C) The mRNA moves between the two subunits of ribosomes during protein synthesis.
(D) Ribosome consists of messenger RNA and 70 different proteins.
Choose the incorrect answer from the options given below: