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Posted by Manisha Kumari 8 years, 4 months ago
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Uttam Thakur 8 years, 4 months ago
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Vivek Saini 8 years, 4 months ago
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Posted by Neetu Meena 4 years, 9 months ago
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Sia ? 4 years, 9 months ago
| Comparison | DNA | RNA |
| Name | DeoxyriboNucleic Acid | RiboNucleic Acid |
| Function | Long-term storage of genetic information; transmission of genetic information to make other cells and new organisms. | Used to transfer the genetic code from the nucleus to the ribosomes to make proteins. RNA is used to transmit genetic information in some organisms and may have been the molecule used to store genetic blueprints in primitive organisms. |
| Structural Features | B-form double helix. DNA is a double-stranded molecule consisting of a long chain of nucleotides. | A-form helix. RNA usually is a single-strand helix consisting of shorter chains of nucleotides. |
| Composition of Bases and Sugars | deoxyribose sugar phosphate backbone adenine, guanine, cytosine, thymine bases |
ribose sugar phosphate backbone adenine, guanine, cytosine, uracil bases |
| Propagation | DNA is self-replicating. | RNA is synthesized from DNA on an as-needed basis. |
| Base Pairing | AT (adenine-thymine) GC (guanine-cytosine) |
AU (adenine-uracil) GC (guanine-cytosine) |
| Reactivity | The C-H bonds in DNA make it fairly stable, plus the body destroys enzymes that would attack DNA. The small grooves in the helix also serve as protection, providing minimal space for enzymes to attach. | The O-H bond in the ribose of RNA makes the molecule more reactive, compared with DNA. RNA is not stable under alkaline conditions, plus the large grooves in the molecule make it susceptible to enzyme attack. RNA is constantly produced, used, degraded, and recycled. |
| Ultraviolet Damage | DNA is susceptible to UV damage. | Compared with DNA, RNA is relatively resistant to UV damage. |
Posted by Neetu Meena 4 years, 9 months ago
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Sia ? 4 years, 9 months ago
| Comparison | DNA | RNA |
| Name | DeoxyriboNucleic Acid | RiboNucleic Acid |
| Function | Long-term storage of genetic information; transmission of genetic information to make other cells and new organisms. | Used to transfer the genetic code from the nucleus to the ribosomes to make proteins. RNA is used to transmit genetic information in some organisms and may have been the molecule used to store genetic blueprints in primitive organisms. |
| Structural Features | B-form double helix. DNA is a double-stranded molecule consisting of a long chain of nucleotides. | A-form helix. RNA usually is a single-strand helix consisting of shorter chains of nucleotides. |
| Composition of Bases and Sugars | deoxyribose sugar phosphate backbone adenine, guanine, cytosine, thymine bases |
ribose sugar phosphate backbone adenine, guanine, cytosine, uracil bases |
| Propagation | DNA is self-replicating. | RNA is synthesized from DNA on an as-needed basis. |
| Base Pairing | AT (adenine-thymine) GC (guanine-cytosine) |
AU (adenine-uracil) GC (guanine-cytosine) |
| Reactivity | The C-H bonds in DNA make it fairly stable, plus the body destroys enzymes that would attack DNA. The small grooves in the helix also serve as protection, providing minimal space for enzymes to attach. | The O-H bond in the ribose of RNA makes the molecule more reactive, compared with DNA. RNA is not stable under alkaline conditions, plus the large grooves in the molecule make it susceptible to enzyme attack. RNA is constantly produced, used, degraded, and recycled. |
| Ultraviolet Damage | DNA is susceptible to UV damage. | Compared with DNA, RNA is relatively resistant to UV damage. |
Posted by Aishwarya Bhattacharya 8 years, 4 months ago
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Vivek Saini 8 years, 4 months ago
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Kritika Trehan 8 years, 4 months ago
medical Definition of testcross. :a genetic cross between a homozygous recessive individual and a corresponding suspected heterozygote to determine the genotype of the latter.
Posted by Suresh Jadhav 8 years, 4 months ago
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Kritika Trehan 8 years, 4 months ago
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determinesDNA's instructions, or genetic code.
Posted by Vivek Saini 8 years, 4 months ago
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Abhishek Mishra 8 years, 4 months ago
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Kritika Trehan 8 years, 4 months ago
A cloning vector is a small piece of DNA, taken from a virus, a plasmid, or the cell of a higher organism, that can be stably maintained in an organism, and into which a foreign DNA fragment can be inserted for cloningpurposes.
Posted by Deepak Prasad 8 years, 4 months ago
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Kritika Trehan 8 years, 4 months ago
each of several hierarchical levels in an ecosystem, consisting of organisms sharing the same function in the food chain and the same nutritional relationship to the primary sources of energy.
Posted by Amm Kaur 8 years, 4 months ago
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Chirag Khandelwal 8 years, 4 months ago
Kritika Trehan 8 years, 4 months ago
Leaching describes the "washing out" from soils any soluble chemicals that are not "bound" to the soil particles. It occurs as excess rain (or flood) waters drain through the soil.
Posted by Akansha Choubey 8 years, 4 months ago
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Posted by Akansha Choubey 8 years, 4 months ago
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Sagar Sagar 8 years, 4 months ago
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