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Palaeontologists unearthed a human skull...

Palaeontologists unearthed a human skull during excavation. A small fragment of the scalp tissue was still attached to it. Only little DNA could be extracted from it. It the genes of the ancient man need to be analysed, the best way of sufficient amount DNA from this extract is

A

hybridising the DNA with a DNA probe

B

subjecting the DNA to polymerase chain reaction

C

Sujbection the DNA to gel electrophoresis

D

treating the DNA with restriction endonucleases

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The correct Answer is:
b
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Palaeontologista uarthed a human skull during excavation. A small fragment of the scalp tissue was still attached to it. Only little DNA could be extracted from it. It the genes of the ancient man need to be analysed, the best way of sufficient amount DNA from this extract is

Palaeontologists unearthed a human skull during excavation. A small fragment of the scalp tissue was still attached to it . Only little DNA could be extracted from it . It the genes of the ancient man need to be analysed the best way of getting sufficient amount of DNA from this extract is :

Go though the following statements (i) Meselson & stahl used cesium chloride density gradient to distinguish heavy DNA molecules from the normal DNA molecules. (ii) In meselson & Stahl experiment the DNA that was extracted from the culture one generation after the transfer from .^(15)N to .^(14)N , was composed of equal amount of hybrid (intermediate) DNA and of light DNA. (iii) In prokaryotes, control f the rate of transcriptional initiation is the predominant site for control of gene expression. (iv) In lac operon, the repressor is synthesised only at the time when the level of metabolite is in excess. Find out the correct statements?

Mankind's experience of various evolutionary changes from primitive times to the present day has been extensive and varied. However, man's problems were never before as complicated as they seem to be today, Man's economic activity centres primarily around production, Labour is said to be the primary factor of production, its role, therefore, has been given a lot of importance. It should be useful to have an overall view of the economic history of man-from the nomadic times to the modern factory system and study its relevance to the various labour problems of today. Initially, man passed through the hunting and fishing stage'. During this period, his basic needs were adequately met by Nature. Wild animals, birds and fruits satisfied his hunger, and his thirst was quenched by the waters of springs and rivers, Caves gave him shelter and barks of trees were used as clothing. During this stage of man's progress, labour problems did not exist because of the absence of any economic, political and social systems. Then came the pastoral stage', which was marked by a certain amount of economic activity. The nomadic and migratory nature of man persisted, and, together with his goats and cattle, he moved on to fresh pastures and meadows. Some conflicts would sometimes take place among herd-owners, for, during this period, the institution of nominal private property ownership was not known. This stage paves the way for the agricultural stage', during which the class system began to develop. There was a small artisan class mostly self-employed, and there were also landed proprietors or Zamindars as well as slaves. Thus, arose the feudal system. During the fourth stage of these developments, the handicrafts stage', a number of social and economic changes took place which marked the beginning of the labour problem in the world. The self-sufficient economy of the village underwent a drastic change. The community of traders and merchants emerged. Humanity's evolution from primitive stage to the present has been

Mankind's experience of various evolutionary changes from primitive times to the present day has been extensive and varied. However, man's problems were never before as complicated as they seem to be today, Man's economic activity centres primarily around production, Labour is said to be the primary factor of production, its role, therefore, has been given a lot of importance. It should be useful to have an overall view of the economic history of man-from the nomadic times to the modern factory system and study its relevance to the various labour problems of today. Initially, man passed through the hunting and fishing stage'. During this period, his basic needs were adequately met by Nature. Wild animals, birds and fruits satisfied his hunger, and his thirst was quenched by the waters of springs and rivers, Caves gave him shelter and barks of trees were used as clothing. During this stage of man's progress, labour problems did not exist because of the absence of any economic, political and social systems. Then came the pastoral stage', which was marked by a certain amount of economic activity. The nomadic and migratory nature of man persisted, and, together with his goats and cattle, he moved on to fresh pastures and meadows. Some conflicts would sometimes take place among herd-owners, for, during this period, the institution of nominal private property ownership was not known. This stage paves the way for the agricultural stage', during which the class system began to develop. There was a small artisan class mostly self-employed, and there were also landed proprietors or Zamindars as well as slaves. Thus, arose the feudal system. During the fourth stage of these developments, the handicrafts stage', a number of social and economic changes took place which marked the beginning of the labour problem in the world. The self-sufficient economy of the village underwent a drastic change. The community of traders and merchants emerged. The pastoral stage was marked by a certain amount of economic activity." How?

Mankind's experience of various evolutionary changes from primitive times to the present day has been extensive and varied. However, man's problems were never before as complicated as they seem to be today, Man's economic activity centres primarily around production, Labour is said to be the primary factor of production, its role, therefore, has been given a lot of importance. It should be useful to have an overall view of the economic history of man-from the nomadic times to the modern factory system and study its relevance to the various labour problems of today. Initially, man passed through the hunting and fishing stage'. During this period, his basic needs were adequately met by Nature. Wild animals, birds and fruits satisfied his hunger, and his thirst was quenched by the waters of springs and rivers, Caves gave him shelter and barks of trees were used as clothing. During this stage of man's progress, labour problems did not exist because of the absence of any economic, political and social systems. Then came the pastoral stage', which was marked by a certain amount of economic activity. The nomadic and migratory nature of man persisted, and, together with his goats and cattle, he moved on to fresh pastures and meadows. Some conflicts would sometimes take place among herd-owners, for, during this period, the institution of nominal private property ownership was not known. This stage paves the way for the agricultural stage', during which the class system began to develop. There was a small artisan class mostly self-employed, and there were also landed proprietors or Zamindars as well as slaves. Thus, arose the feudal system. During the fourth stage of these developments, the handicrafts stage', a number of social and economic changes took place which marked the beginning of the labour problem in the world. The self-sufficient economy of the village underwent a drastic change. The community of traders and merchants emerged. ."man's problems were never before as complicated as they seem to be today" means

Mankind's experience of various evolutionary changes from primitive times to the present day has been extensive and varied. However, man's problems were never before as complicated as they seem to be today, Man's economic activity centres primarily around production, Labour is said to be the primary factor of production, its role, therefore, has been given a lot of importance. It should be useful to have an overall view of the economic history of man-from the nomadic times to the modern factory system and study its relevance to the various labour problems of today. Initially, man passed through the hunting and fishing stage'. During this period, his basic needs were adequately met by Nature. Wild animals, birds and fruits satisfied his hunger, and his thirst was quenched by the waters of springs and rivers, Caves gave him shelter and barks of trees were used as clothing. During this stage of man's progress, labour problems did not exist because of the absence of any economic, political and social systems. Then came the pastoral stage', which was marked by a certain amount of economic activity. The nomadic and migratory nature of man persisted, and, together with his goats and cattle, he moved on to fresh pastures and meadows. Some conflicts would sometimes take place among herd-owners, for, during this period, the institution of nominal private property ownership was not known. This stage paves the way for the agricultural stage', during which the class system began to develop. There was a small artisan class mostly self-employed, and there were also landed proprietors or Zamindars as well as slaves. Thus, arose the feudal system. During the fourth stage of these developments, the handicrafts stage', a number of social and economic changes took place which marked the beginning of the labour problem in the world. The self-sufficient economy of the village underwent a drastic change. The community of traders and merchants emerged. Why does the author say that labour problems did not exist during the hunting and fishing stage?

Mankind's experience of various evolutionary changes from primitive times to the present day has been extensive and varied. However, man's problems were never before as complicated as they seem to be today, Man's economic activity centres primarily around production, Labour is said to be the primary factor of production, its role, therefore, has been given a lot of importance. It should be useful to have an overall view of the economic history of man-from the nomadic times to the modern factory system and study its relevance to the various labour problems of today. Initially, man passed through the hunting and fishing stage'. During this period, his basic needs were adequately met by Nature. Wild animals, birds and fruits satisfied his hunger, and his thirst was quenched by the waters of springs and rivers, Caves gave him shelter and barks of trees were used as clothing. During this stage of man's progress, labour problems did not exist because of the absence of any economic, political and social systems. Then came the pastoral stage', which was marked by a certain amount of economic activity. The nomadic and migratory nature of man persisted, and, together with his goats and cattle, he moved on to fresh pastures and meadows. Some conflicts would sometimes take place among herd-owners, for, during this period, the institution of nominal private property ownership was not known. This stage paves the way for the agricultural stage', during which the class system began to develop. There was a small artisan class mostly self-employed, and there were also landed proprietors or Zamindars as well as slaves. Thus, arose the feudal system. During the fourth stage of these developments, the handicrafts stage', a number of social and economic changes took place which marked the beginning of the labour problem in the world. The self-sufficient economy of the village underwent a drastic change. The community of traders and merchants emerged. Which word in the passage means 'surfaced'?

ARIHANT NEET-BIOTECHNOLOGY : PRINCIPLES AND PROCESSES-Chapter exercises (C. Medical entrances gallery (Collection of Questions Asked in NEET & Various Medical Entrance Exams))
  1. Vector for T-DNA is

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  2. Which of the following is a plasmid ?

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  3. In recombinant DNA technique, the term vector refers to

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  4. Enzyme that is used in PCR technology is

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  5. GAATTC is the recognization site for which of the following restrictio...

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  6. Cosmid is

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  7. Which of the following is not a restriction endonuclease ?

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  8. Blood stains ar found at the site of a murder. If DNA profiling techni...

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  9. Palaeontologists unearthed a human skull during excavation. A small fr...

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  10. Gel electrophoresis is used for

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  11. The linking of antibiotic resistance gene with the plasmid vector beca...

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  12. What is the first step in the Southern Blot technique

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  13. Manipulation of DNA in genetic engineering became possible due to the ...

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  14. Assertion : in recombinant DNA technology, human genes are often trans...

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  15. Dr Karry B Mullis was awarded Nobel Prize in chemistry in 1993 for his...

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  16. Plasmids are suitable vectors for gene cloning because they are

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  17. Which one of the following makes use of RNA as a template to syntesize...

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  18. Transfer of any gene into a completely different organism can be done ...

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  19. A plasmid

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  20. Which of the following is used as a best genetic vector in plants?

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