The correct answer is: introns
Processing of mRNA is process that occurs only in eukaryotic cells. After the transcription, newly formed mRNA molecule is called and it must be processed into a messenger RNA (mRNA). Processing includes:
• Addition of a 5' cap to the beginning of the RNA
• Polyadenilation- addition of a poly-A tail (tail of A nucleotides) to the end of the RNA
• Splicing- removal of introns and linking the exons
After these steps mRNA is mature and used for the further steps (e.g. translation).
Sometimes some genes are alternatively spliced.
Invasive exotic species are species that interfiere with the natural food chain and are usually foreign
This is an example of the Water Cycle.
Water returning to the Earth from the atmosphere would be precipitation
<span>The correct answer is a. the overuse of fertilizer lead to reduced crop yields over time. This was unexpected because it is common for fertilizers to increase the yields and the quality of the product, but what happens over time is the opposite so it can be said that it's an unexpected consequence.</span>
Answer:
By reducing the number of chromosomes in gametes to one-half of the diploid number (to the haploid number), fertilization will restore the diploid number of chromosomes when the gametes fuse.
Explanation: i just looked at my notes
also have a lovely day
