Recent questions tagged biology

Who won the Nobel prize for Plomerase Chain Reaction or PCR?

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The first hormone artificially produced by culturing bacteria is

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Which of the following is a palindrome?

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Restriction endonucleases are utilized in genetic engineering techniques as

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Which of the following pairs is correctly matched?

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Who discovered enzyme restriction endonuclease?

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Restriction enzymes are isolated chiefly from

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The first step in genetic engineering is

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Which one of the following bacteria has found extensive use in genetic engineering work in plants?

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cDNA is

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In bacteria, plasmid is

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Identify the vector suitable for cloning long DNA fragments

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Advancement in genetic engineering has been possible due to discovery of

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With the help of DNA ligase donor DNA fragment is joined.It is called

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Which one of the following properties makes plasmids suitable vectors for gene cloning?

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In bacteria, genes for antibiotic resistance are usually located in

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Plasmids are autonomously replicating mini chromosomes found in

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The technique used for separating the fragments of DNA is

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Biotechnology is presently being used to do which of the following?

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Which of these would not be likely to increase differences between populations?

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Evolution is principally a process of

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Which of the following is vestigial in humans?

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Which one of the following set of structures includes only analogus organs?

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Homologus structures have

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The first horse like animal from which the modern horse Equus has evolved , Oligocene was the

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During fossil formation, the soft part decompose and harder ones are infiltrated by minerals and turn into stony shapes. This type of fossil is known as

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Two geographical regions separated by high mountains are

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Two geographical regions separated by high mountains are

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Carboniferous period of coal deposition was

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Fossils are now dated by

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Russian scientist who proposed the theory of origin of life was

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In what ways were conditions on early Earth different from those on Modern earth?

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Believers of spontaneous generation theory assumed that

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The presence of two chambered heart in tadpole of frog gives support to the theory of

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Genetic divergence of two populations can be countered by

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Picture question - class 12 - biology

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Picture question - class 12 - biology

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Picture question - class 12 - biology

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Picture question - class 12 - biology

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Picture question - class 12 - biology

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The resemblance between different groups due to common function or adaptation may be referred to as an example of

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The essence of Haeckel’s recapitulation theory is

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Which of the following is a vestigial organ in the human body?

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Which of the following is the evidence of evolution?

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The origin of first mammals occurred

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The earliest era in the geologic record is the

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In their laboratory simulation of early Earth, Urey and Miller observed the abiotic synthesis of

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Fossil X is older than fossil Y because

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Study of fossils is known as

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A fossil is a

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