learned this is class
DNA base sequence
DNA is made up of nucleotide bases in pair of three generally termed as codons. There are 3 billion DNA sequence in a human being as per the human genome project. These 3 billion sequences form more than 20000 genes. Almost all the human genes are similar in structure and arrangement up to a percentage of ninety nine percent. Only 1 % of the genes are different or varying. With this 1% gene, nearly millions of combinations can be formed which in a way is sufficient to make us unique.
nitrogen base sequence
The correct answer is they are produced by cyanobacteria.
Stromatolites are being produced by cyanobacteria.
Stromatolites are termed as layered mounds, which have columns and also sheet like rocks which are originally formed with growth of layers.
Lichen stromatolites is a type of stromatolite which is formed by layered structures rocks and they are formed above water.
Answer: produced by cyanobacteria.
Stromatolites are sedimentary rocks in the form of layered mounds, sheet like structures, columns and dome shaped structures. The primary composition of these sedimentary rocks is the limestone. These are found in the shallow waters and are usually formed by the cynobacteria and other single celled organisms such as algae and lichen.