The ancestors of modern-day fish were vertebrate chordates. Vertebrate chordates are believed to have evolved from invertebrate chordates, which were similar to modern-day tunicates.

What change must have occurred during the evolution from invertebrate chordates to vertebrate chordates?

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.

I’m confused so sorry

Hello there,before the 1940s, scientists believed that proteins, rather than dna, were the carriers of genetic material in the cell. why?   answer:   proteins are present within the nucleus