80. Gene therapy (A) has proven to be beneficial to HIV patients. (B) involves replacement of a defective allele in sex cells. (C) cannot be used to correct genetic disorders. (D) had apparent success in treating disorders involving bone marrow cells.

2. Genetically engineered plants (A) are more difficult to engineer than animals. (B) include a transgenic rice plant that can help prevent are more difficult to engineer than animals t vitamin A deficiency. (C) are being rapidly developed, but traditional plant breeding programs are still the only method used to develop new plants. (D) are able to fix nitrogen themselves

80. Gene therapy
(A) has proven to be beneficial to HIV patients.
(B) involves replacement of a defective allele in sex cells.
(C) cannot be used to correct genetic disorders.
(D) had apparent success in treating disorders involving bone marrow cells.

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