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#Question id: 40508


 The primitive Earth’s atmosphere was believed to be rich in:

#Environmental Science
  1.  Oxygen and nitrogen
  2.  Methane, ammonia, hydrogen
  3.  Carbon monoxide and oxygen
  4.  Nitrogen and ozone

Answer:- Option(s): 2


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#Question id: 5074

#Zoology

The "mid-blastula transition" is the point in development when:

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#Question id: 5075

#Zoology

Which of the following developmental processes has been most recently completed in the amphibian embryo shown here?

 

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#Question id: 5239

#Biochemistry

Which of the following statements is not true for Hfr strains of E. coli ?

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#Question id: 5240

#Biochemistry

If bacteria grow in the presence of a large amount of DNase, which of the following recombination process completely inhibited?

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#Question id: 5244

#Biochemistry

Transformation can used to map bacterial gene, which of the following statement is correct?

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#Question id: 5245

#Biochemistry

Which method of gene transfer involves direct contact between the bacteria?

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