Use the drop-down menus to complete the statements. A segment of DNA is called a . A complex of nucleic acids and proteins that make up chromosomes is called . A structure in the nucleus of an eukaryotic cell that is made up of condensed DNA is called a

the first point, i am pretty sure.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

can you attach the