What does a chromosome consist of? A. Tightly wound DNA only.

B. Loosely dispersed DNA and proteins.

C. Tightly wound DNA and proteins.

D. Loosely dispersed DNA.

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

Brass gets discoloured in air because of the presence of which of the following gases in air? a. oxygen b. hydrogen sulphide c. carbon dioxide d. nitrogen

What is the difference in the cell cycle between healthy cells and cancerous cells?