A strand of mRNA is the compliment to the coding strand of DNA. It kind of has the opposite information from DNA (if a DNA strand is TCCGATC the compliment mRNA would be AGGCTAG). This way, it is able to retain the information when travelling to the ribosome for translation (aka, turning the DNA information in proteins)
Answer:
In cases of immune system overactivity, the body attacks and damages its own tissues (autoimmune diseases). Immune deficiency diseases decrease the body's ability to fight invaders, causing vulnerability to infections.
Explanation:
Answer:
Mammals first appeared
Explanation:
The dinosaurs became extinct one million years after the Cenozoic era started. The mammals first appeared as the modern culture first appeared in that era.
