Q. 224. What do you understand by heredity and variation?
Q. 225. Define monohybrid and dihybrid crosses.
Q. 226. Describe the structure of DNA.
Q. 227. What is genetic material, and what is its location?
Q. 228. Is RNA also the genetic material, if so, discuss with suitable examples.
Q. 229. What are prokaryotic and eukaryotic cells?
Q. 230. What is organic evolution. Give examples.
Q. 231. What is sex chromosome?
Q. 232. Write the expanded form of DNA.
