The molecule which is a complimentary copy of a section of DNA used for protein synthesis is called mRNA.
Only eukaryotes have a nucleus...all the other answers are true for both euks and proks...remember that only eukaryotes have internal membranes.
Answer:
Taxonomy may be defined as the branch of biology that mainly deals with the classification, arrangement and nomenclature of the organism. Organism are classified into the different taxa depending on their similarities and differences.
The shared characters may be defined as the characters that are share among the two lineages. As given in the question, the two humps that are present on the bottom end of Pakicetus ankle bone is the shared distinguish character with the other ungulates that are even toed.
If you stay in the water for too long your hand will shrink