Biology · Plant Biotechnology

Given below are some statements associated with transgenic plants. Each statement has a blank space indicated by '_______'. A. A transgenic plant with two functional copies of a transgene can segregate in a _______ ratio for the transgenic phenotype on self-pollination if the two genes are unlinked. B. The _______ system can be used for removal of marker genes from transgenic plants. C. The endogenous plant gene, _______, can be used to engineer resistance to imidazolinone herbicides. D. Variations in transgene expression levels between five independent transgenic lines generated using the same T-DNA construct can be due to . Which one of the following options has the correct sequence of terms that can be used to fill in the blanks in the above statements (from A to D) such that all statements become true?