False, Eukaryotic cells always contain a nucleus, prokaryotic cells do not have a nucleus.
It has a dorsal nerve chord
D. Fold mountain that appeared wavy I think but just in case check an other answer
<span>Avery Identified through a qualitative test that DNA was present. Through a chemical test he found that the make up was DNA. Through enzyme testing Avery found that only DNA degradation stopped transforming.</span>
The genetic recombination of human influenza A caused massive, widespread epidemics that affected the global human population several times in the twentieth century.
<h3>What is influenza ?</h3>
Influenza is a disease caused by virus which is contagious.It is different from a normal cold as it shows severe symptoms than flu.
Influenza is caused by influenza virus and people get infected when they breathe in tiny airborne droplets from the cough or sneezes of infected person.
Outbreaks of influenza A virus occurred in twentieth century.During 1918 influenza pandemic was the most dangerous pandemic.
Therefore, the genetic recombination of human influenza A caused massive, widespread epidemics that affected the global human population several times in the twentieth century.
Learn more about influenza here:
brainly.com/question/27776447
#SPJ4
