Digestive system, heart, lungs
The v formation causes a slipstream for the birds behind the one in front causing it to be easier for them to fly long distances, the bird in front will often switch with a bird in back when it gets tired.
It became more polluted due to the gas steam engines and factories set off into the atmosphere. Another reason would be that many people lived in close quarters, especially poor people so they had to crowd two+ families in one small space. This often made it a very dirty environment and more likely to catch diseases. Plus, trees got cut down to make room for new developments.
Brainliest please? Hope this helped you!
Answer:
The primary transcript is the same size as the functional mRNA
Explanation:
- Genetic information carried by the DNA is used to generate proteins through the process of gene expression. Gene expression involves the process of transcription and translation.
- During transcription information in the DNA is used to generate a primary transcript which in turn forms a messenger RNA.
- <em><u>The primary transcript from the process of transcription undergoes excision to remove non-coding sequences so as tor form the functional mRNA in eukaryotes.</u></em> This explains why the primary transcript in eukaryotes is larger than the functional messenger RNA.
- However, in prokaryotes the primary transcript is the same size as the functional RNA.
