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The Genotypic function of DNA
- Replication
- The genetic material must store genetic information and accurately transmit that information from parents to offspring, generation after generation
The Phenotypic function of DNA
- Gene Expression
- The genetic material must control the development of the phenotype of the organism. That is, the genetic material must dictate the growth of the organism from the single-celled zygote to the mature adult.
The Evolutionary Function
- Mutation
- The genetic material must undergo changes to produce variations that allow organisms to adapt to modifications in the environment so that evolution can occur.
The Overall Function of DNA
- The genetic material must replicate, control the growth and development of the organism, and allow the organism to adapt to changes in the environment.
Chromosomes are composed of what?
-Proteins and Nucleic acids (DNA & RNA)
What type of organism use RNA to encode its genetic information?
- Small viruses (E. Coli)
Most somatic cells of diploid organisms contain ___ the amount of DNA as the haploid germ cells of the same species?
Twice
Somatic Cell
- A cell that is a component of the body, in contrast with a germ call that is capable, when fertilized, of reproducing the organism.
Germ Cell
- A reproductive cell capable when mature of being fertilized and reproducing an entire organism
True or False, the composition of both RNA and proteins is the same (with rare expectations) in all the cells of an organism
- False, The molecular composition of DNA is the same in al the cells of an organism.
- The composition of both RNA and proteins is highly variable from one cell type to another.
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