A chalazion is caused by the oil in the gland becoming too thick to flow out of the gland or the opening of the gland being obstructed. Without anywhere to go, the oil builds up inside the gland and forms a lump in the eyelid.ach of the oil glands, called meibomian glands, produces oil that flows out of the gland into the tears. The oil exits from each gland through a tiny circular opening just behind the eyelashes of the upper and lower lids of both eyes.
Transcription activator-like effector nucleases (TALENs) are artificial restriction enzymes generated by fusing a TAL effector DNA-binding domain to a DNA cleavage domain.Restriction enzymes are enzymes that cut DNA strands at a specific sequence.rom Wikipedia, the free encyclopedia. Transcription activator-like effector nucleases (TALENs) are artificial restriction enzymes generated by fusing a TAL effector DNA-binding domain to a DNA cleavage domain. Restriction enzymes are enzymes that cut DNA strands at a specific sequence.
Answers. Best Answer: RNA polymerase is used in Transcription while Helicase is used in DNA replication. RNA polymerase is an enzyme that will help to unwind the double stranded DNA by breaking the hydrogen bonds between complementary bases.Basically, RNA polymerase is a wonderful enzyme which does all the work from breaking to adding complementary RNA nucleotides.NA polymerase is an enzyme that will help to unwind the double stranded DNA by breaking the hydrogen bonds between complementary bases. Basically, RNA polymerase is a wonderful enzyme which does all the work from breaking to adding complementary RNA nucleotides.