What process can be used to preserve a genetic line by freezing embryos?

What process can be used to preserve a genetic line by freezing embryos?

• A. Quarantine
• B. Rederivation
• C. Recombination
• D. Cryopreservation

Answer: (D)

Cryopreservation is the process of freezing biological material so it can be stored long-term without damage. For preserving a genetic line, embryos are collected and treated with cryoprotectants, then cooled in a controlled way and stored in liquid nitrogen. When the line is needed again, the embryos are thawed and transferred into foster mothers to rederive offspring, keeping the exact genetic material intact for future generations. This approach is specifically about long-term storage of genetic material. Quarantine focuses on disease control, rederivation removes pathogens from a line, and recombination is genetic modification, not preservation of a line.

Cryopreservation is the process of freezing biological material so it can be stored long-term without damage. For preserving a genetic line, embryos are collected and treated with cryoprotectants, then cooled in a controlled way and stored in liquid nitrogen. When the line is needed again, the embryos are thawed and transferred into foster mothers to rederive offspring, keeping the exact genetic material intact for future generations. This approach is specifically about long-term storage of genetic material. Quarantine focuses on disease control, rederivation removes pathogens from a line, and recombination is genetic modification, not preservation of a line.