Hela cells are a group of cells that were removed from henrietta lacks in 1951. these cells have been growing ever since they were removed. which research tool best aids in growing a large number of cells outside of a body over a long period of time?

microscopes

cell culturing

immunostaining

genetic methods

Cell culturing

Explanation:

-Microscope is a tool that is used to be able to see objects that are really small.

-Cell culturing  is a process to grow cells outside their environment.

-Immunostaining  is a method in which antibodies are used to identify an antigen.

-Genetic methods refers to the techniques that are used to analyze genetic phenomena.

According to this, the research tool that best aids in growing a large number of cells outside of a body over a long period of time is cell culturing.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.