4. DNA sequence comparison
5. Random mutations
So dark linen thread structure is chromosome that we see. And and by molecule heritage that we contain.
The answer is mRNA. Translation is the process of reading the code in mRNA in the ribosomes to make protein. The ribosome is the organelle responsible for making proteins. The mRNA is translated from the language of nucleic acids (nucleotides) to the language of proteins.
The answer is Photosynthesis