James Watson
Watson, Crick, and Rosalind Franklin
In the early 1950s, American biologist James Watson and British physicist Francis Crick came up with their famous model of the DNA double helix.
Answer: Biodiversity is a measure of variation at the genetic, species, and ecosystem level.
Explanation:
The physical characteristics of influenza viruses are that they are single-stranded, RNA viruses enclosed in a helical nucleocapsid. On the outside, these viruses are enveloped. Two important proteins are found on surface of this envelope: hemagglutinin and neurominidase.
Answer:
D
Explanation:
becoz it is an animal cell