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

There are two kinds of nucleases - exonucleases and endonucleases. Exonucleases remove nucleotides from the ends of the DNA whereas, endonucleases make cuts at specific positions within the DNA. The cutting of DNA by restriction endonucleases results in the fragments of DNA. These fragments can be separated by a technique known as gel electrophoresis. Since DNA fragments are negatively charged molecules they can be separated by forcing them to move towards the anode under an electric field through a medium/matrix. Small volume cultures cannot yield appreciable quantities of products. To produce in large quantities, the development of bioreactors, where large volumes (100 - 1000 litres) of culture can be processed, was required. Thus, bioreactors can be thought of as vessels in which raw materials are biologically converted into specific products, individual enzymes, etc., using microbial plant, animal or human cells. PCR stands for Polymerase Chain Reaction. In this reaction, multiple copies of the gene (or DNA) of interest are synthesised in vitro using two sets of primers (small chemically synthesised oligonucleotides that are complementary to the regions of DNA) and the enzyme DNA polymerase.
Which one of the following enzymes remove nucleotides from the ends of the DNA?

In which stage of sewage treatment, large amount of air is pumped into it?

The mathematical expression that represents the Exponential growth in a population is:

Match List - I with List - II.

List - I	List - II
(A) Transgenic mice	(I) Hereditary disease
(B) PCR	(II) Safety of Polio vaccine
(C) Golden rice	(III) Molecular Diagnosis
(D) Gene Therapy	(IV) Enhanced nutritional value

Choose the correct answer from the options given below:

Match List I with List - II.

List - I	List - II
(A) Lepidopteran	(I) Beetles
(B) Coleopterans	(II) Meloidegyne incognitia
(C) Dipterans	(III) Tobacco budworm
(D) Nematode	(IV) Agrobacterium
	(V) Flies and mosquitoes

Choose the correct answer from the options given below:

Arrange the given stages involved in replication of retrovirus.
(A) New viral RNA is produced by the infected cell
(B) Viral DNA is produced by reverse transcriptase
(C) Viral DNA is incorporated into host genome
(D) Viral RNA is introduced into animal cell
Choose the correct answer from the options given below:

Down's syndrome is caused by:

The value of the integral \(\int_1^3|x-2| d x\) is :

Area of the region bounded by \(y=3 x, x\)-axis, and \(x=-1\) is :

If A is a square matrix and I is the identify matrix of same order such that \(A ^2= I\), then \(3( A - I )^3+3( A + I )^3-15 A\) is equal to

Which of the following statements are correct?
(A) If \(\vec{a}\) and \(\vec{b}\) represent the adjacent sides of a triangle, then its area is \(\frac{1}{2}|\vec{a} \times \vec{b}|\)
(B) If \(\vec{a}\) and \(\vec{b}\) represent the adjacent sides of a parallelogram, then its area is \(|\vec{a} \times \vec{b}|\)
(C) \(|\vec{a} \times \vec{b}|=|\vec{a}||\vec{b}| \cos \theta\)
(D) If \(\vec{a}\) and \(\vec{b}\) represent the 'diagonals' of a parallelogram, then its area is \(\frac{1}{2}|\vec{a} \times \vec{b}|\)
Choose the correct answer from the options given below :

Which of the following effectively inhibits the growth of tumours?