Cell- <span>the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic.</span>
It is the fraction of all chromosomes in the population that carry that allele.
Answer:
There is alternate splicing of the runner mRNA.
Carbon dioxide is not safe for your lungs because once it reaches your lungs it will stop your breathing and you could die.
The pulmonary vein brings the oxygenated (clean) blood to the left atrium.
Pls mark this as the brainliest
