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Which of the following is the least effective method of birth control?
The test-tube baby programme employs which one of the following techniques?
Gamete Intra-fallopian transfer (GIFT) is:
Match Column-I with Column-II and select the correct option using the codes given below:
Select the correct option of haploid cells from the following groups:
Production of a human protein in bacteria by genetic engineering is possible because:
What are those structures that appear as 'beads-on-string' in the chromosomes when viewed under an electron microscope?
The drug RU-486 is taken after sexual intercourse. It blocks implantation, and in this sense it prevents pregnancy:
In case of a couple, where the male is having a very low sperm count, which technique will be suitable for fertilisation?
Embryo with more than 16 blastomeres formed due to in vitro fertilisation is transferred into:
PCR and Restriction Fragment Length Polymorphism are the methods for:
The one aspect which is not a salient feature of genetic code, is its being:
What is the figure given below showing in particular?
Given below are two statements: Statement I: DNA polymerases catalyse polymerisation only in one direction, that is 5' →3' Statement II: During replication of DNA, on one strand the replication is continuous while on other strand it is discontinuous. In the light of the above statements, choose the correct answer from the options given below:
What is not true for genetic code?
Which one of the following triplet codes is correctly matched with its specificity for an amino acid in protein synthesis or as a 'start' or 'stop' codon?
The transformation experiment was first performed on which bacteria:
Unequivocal proof that DNA is the genetic material was first proposed by:
E. coli cells with a mutated z gene of the lac operon cannot grow in a medium containing only lactose as the source of energy because-
The graph between the displacement $x$ and time $t$ for a particle moving in a straight line is shown in the figure. During the intervals OA, AB, BC, and CD, the acceleration of the particle is: