Which phylum contains the largest multicellular forms of algae? In what way are these algae commercially important? Please help me :,)

Phylum Rhodophyta and phylum Ochrophyta.

Explanation:

Phylum Rhodophyta and phylum Ochrophyta are the phylum that contains the largest multicellular forms of algae.  Algae belongs to phylum Rhodophyta also called red algae are used for commercial production of food and gels while on the other hand, algae of phylum Ochrophyta also known as brown algae are used to produce alginates, which are used as food additives in different products and as a thickening material.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'