Answer the questions from the figure given below:

If the reaction starts with one molecule of DNA, the number of cycles required to produce one billion amplified products is:

Scientific term for a situation where a single gene can exhibit multiple
phenotypic expressio is:

Various types of skin colour in humans is an example of :

Read the following passage carefully and answer the given questions.
The B-lymphocytes produce an army of proteins in response to pathogens. Each antibody molecule has four peptide chains, two small called light chains and two longer called heavy chains. Virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection. Symptoms of allergic reactions include sneezing, watery eyes, running nose and difficulty in breathing. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Lymphoid organs are the organs where origin and/or maturation and proliferation of lymphocytes occur. The primary lymphoid organs are bone marrow and thymus. After maturation the lymphocytes migrate to secondary lymphoid organs like spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. Heroin commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine, which is extracted from the latex of poppy plant Papaver somniferum.
Heroin, commonly called smack and chemically is -

Read the passage carefully and answer the questions based on the passage:
Pollen pistil interaction involves all events from the landing of pollen grains on the stigma until the pollen tube enters the embryo sac (when the pollen is compatible). When a pollen tube grows through the style and enters into the ovules, it finally discharges two male gametes in one of the synergids. Syngamy and triple fusion are two fusion events occur in angiosperms. Thus, angiosperms exhibit double fertilization. The products of these fusions are the diploid zygote and triploid primary endosperm nucleus. Zygote develops into embryo and primary endosperm cell forms the endosperm tissue. The developing embryo passes through different stages before maturation.
The coconut water from tender coconut, a good source of nutrition is nothing but:

Expand "GEAC":

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

Match List - I with List - II.

List - I	List - II
(A) Pollination between two flowers on different plants	(I) Syngamy
(B) Fusion of male gamete with egg cell	(II) Cleistogamous
(C) Pollination between two flowers of the same plant	(III) Xenogamy
(D) Closed flowers	(IV) Geitonogamy

Choose the correct answer from the options given below:

A die is rolled in such a way that an even number is twice likely to occur as an odd number.
If the die is rolled twice, then the mean of the number of perfect squares in two tosses is :

Identify the correct combination of statements for sacred groves.
(A) These are in-situ conservation strategies.
(B) These are ex-situ conservation strategies.
(C) These are found in the Khasi and Jaintia hills in Meghalaya.
(D) These hold religious values.
Choose the correct answer from the options given below:

Identify the correct sequence of stages in the process of decomposition.
(A) Humification
(B) Fragmentation
(C) Catabolism
(D) Mineralisation
Choose the correct answer from the options given below:

Which of the following statements is correct for the galvanic cell?

Arrange the steps involved in creating pest-resistant transgenic plants using RNA interference (RNAi).
(A) Binding of complementary RNAs to form double-stranded RNA (dsRNA).
(B) Formation of sense and antisense RNA in the host cells.
(C) Silencing of specific mRNA of the nematode.
(D) Introduction of nematode-specific genes into the host plant using Agrobacterium vectors.
Choose the correct answer from the options given below: