Features of thanatophoric dysplasia include macrocephaly, narrow bell-shaped thorax, normal trunk length, and severe shortening of the limbs. Other features of this condition include a narrow chest, short ribs, underdeveloped lungs, and an enlarged head with a large forehead and prominent, wide-spaced eyes. Most affected infants die of respiratory failure shortly after birth.
7.2 .2 Explain the process of DNA replication in prokaryotes, including the role of enzymes (helicase, DNA polymerase, RNA primase and DNA ligase), Okazaki fragments and deoxynucleoside triphosphates. The explanation of Okazaki fragments in relation to the direction of DNA polymerase III action is required.
Describe the role of DNA helicase, DNA polymerase and DNA ligase in DNA replication? This is from my biology homework and it isnt covered in the book believe it or not, none of these words are in the glossary and i have no idea what i'm doing. Any help would be appreciated. Describe the role of DNA helicase, DNA polymerase and DNA ligase in DNA replication. Follow. Report Abuse.