[Campbell Biology P.485] Which of the following statements accurately describes a step or ch... | Practice Question

Which of the following statements accurately describes a step or characteristic in the process of producing therapeutic proteins using transgenic "pharm" animals?

  • A: The desired gene is directly injected into the cytoplasm of unfertilized eggs from the recipient species.
  • B: Transgenic animals are typically preferred over cell cultures for protein production because protein purification from milk is generally more complex.
  • C: The engineered embryos that arise are then surgically implanted into a surrogate female to develop into a transgenic organism.
  • D: Transgenes are typically integrated into the host genome, but the foreign gene cannot be expressed in the resulting organism.

Explanation

The passage details the process of creating transgenic animals, stating that engineered embryos are surgically implanted into a surrogate female, and if successful, develop into a transgenic organism expressing the new gene. Options A, B, and D contain inaccuracies regarding the injection site, purification complexity, and gene expression, respectively.