Recombinant DNA Gene Transfer

All three statements are correct regarding recombinant DNA technology capabilities. (1) Cross-species plant gene transfer is demonstrated in Bt crops and herbicide-resistant plants. (2) Animal genes can be transferred to plants—examples include inserting animal insulin genes in tobacco. (3) Microbial genes transferred to higher organisms is common—Bt toxin genes from Bacillus thuringiensis transferred to cotton and maize. The power of recombinant DNA lies in its ability to overcome natural reproductive barriers. > Recombinant DNA breaks species barriers—transfers possible across kingdoms. Answer: (d).