Question

Describe the two salient features of double helix structure of DNA.

Answer 1

Amphibians are not regarded as true lung breathers because they do not breathe exclusively with their lungs. If they were true lung breathers, they would drown when submerged in water too long. However, they can breathe underwater through their skin. This means they aren't really true lung breathers

Answer 2

Hi mate here is your answer.

Thnkx for asking question.


$double \: helicle \: structure \: of \\ dna$

SOME PHYSICAL PROPERTIES :

Molecular weight = about 10 Dalton

Molecular configuration = 3-D

Diameter = 20 Angesteron

No. of base in
one turn = 10

Angle of one complete turn = 36
I
Length of H- bond = 3A



DNA replicates prior to cell division and is equitably distributed in daughter cell.

$dna \: replication \: is \: semi - \\ conservative \: and \: \:semi - \\ discontinuous$


The double helicle model also explains the replication and transcription and thus support the expressing of its functions as the genetic materials.






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