QUESTION IMAGE
Question
a strand of mrna serves as a temporary copy of a genes specific protein - coding instructions. since dna is confined to the nucleus, mrna carries the instructions from the nucleus to other places in the cell where proteins are made.
complete the table.
| dna | mrna | |
|---|---|---|
| contains specific protein - coding instructions, but does not contain all of an organisms genetic information | ||
| can be found inside the nucleus | ||
| is created through transcription |
Brief Explanations
- Can be found outside the nucleus: DNA is confined to the nucleus (in eukaryotic cells), while mRNA is exported to the cytoplasm (outside the nucleus) to carry protein-making instructions.
- Contains specific protein-coding instructions, but not all genetic info: DNA holds an organism's full genetic code, while mRNA only carries a segment (one gene's protein instructions) transcribed from DNA.
- Can be found inside the nucleus: DNA is stored permanently in the nucleus, and mRNA is synthesized (transcribed) inside the nucleus before being exported.
- Is created through transcription: Transcription is the process of making mRNA from a DNA template; DNA is not created via this process.
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| DNA | mRNA | |
|---|---|---|
| Contains specific protein-coding instructions, but does not contain all of an organism's genetic information | $\square$ (unchecked) | $\blacksquare$ (checked) |
| Can be found inside the nucleus | $\blacksquare$ (checked) | $\blacksquare$ (checked) |
| Is created through transcription | $\square$ (unchecked) | $\blacksquare$ (checked) |