Meaning: 'Common' refers to something that is usual or frequently encountered.

Wrong options:

• rare: 'Rare' means infrequently found or occurring, which contradicts the context of using widely available farm animals.
• identity: 'Identity' refers to the characteristics or qualities of a person or thing, which does not fit the context of describing animals.
• grown: 'Grown' is a past participle that describes the state of development but does not appropriately describe the type of animals in this context.
• prepared: 'Prepared' means made ready for use, which does not apply to the classification of farm animals.
• before: 'Before' is a preposition indicating time, which does not fit as a descriptor for farm animals.
• babies: 'Babies' refers to young offspring, which does not describe the type of animals used in pharming.
• unlimited: 'Unlimited' means without limits, which does not describe the type of farm animals in this context.

Correct answer: grown

Explanation: The word 'grown' is the past participle of 'grow,' which fits grammatically as it describes the state of the animal after it has developed from a single cell. This aligns with the context of discussing the life cycle of the animal.

Meaning: 'Grown' refers to having developed or matured.

Wrong options:

• common: 'Common' describes the type of animals but does not fit the context of their developmental stage.
• identity: 'Identity' refers to characteristics and does not relate to the growth process of animals.
• prepared: 'Prepared' means made ready, which does not apply to the developmental state of the animals.
• before: 'Before' is a preposition indicating time, which does not describe the state of the animals.
• babies: 'Babies' refers to young animals, which does not fit as it describes a stage prior to being fully developed.
• unlimited: 'Unlimited' means without limits, which does not describe the growth stage of the animals.

Correct answer: before

Explanation: The word 'before' is a preposition that indicates the timing of when the DNA is added relative to the cell division. It fits grammatically and contextually, as it specifies that the DNA must be added prior to the division process.

Meaning: 'Before' indicates a time prior to a specified event.

Wrong options:

• common: 'Common' does not fit as it describes the type of animals rather than a timing aspect.
• rare: 'Rare' refers to something infrequent, which does not relate to the timing of DNA addition.
• grown: 'Grown' is a past participle that describes a state of development, not a timing reference.
• prepared: 'Prepared' means made ready, which does not indicate a timing relationship.
• babies: 'Babies' refers to young animals and does not relate to the timing of DNA addition.
• unlimited: 'Unlimited' means without limits, which does not pertain to the timing of the process.

Correct answer: babies

Explanation: The word 'babies' refers to the young offspring of the animal, fitting grammatically as it describes the next generation that will inherit the gene. This aligns with the context of discussing genetic transmission.

Meaning: 'Babies' refers to the young or offspring of animals.

Wrong options:

• common: 'Common' describes the type of animals but does not fit as a term for their offspring.
• rare: 'Rare' means infrequently found, which does not apply to the offspring of the animals.
• grown: 'Grown' describes a state of development and does not refer to young animals.
• prepared: 'Prepared' means made ready, which does not relate to the offspring of the animals.
• before: 'Before' is a preposition indicating time, which does not describe the young of the animals.
• unlimited: 'Unlimited' means without limits, which does not describe the offspring of the animals.

Correct answer: unlimited

Explanation: The word 'unlimited' fits grammatically as it describes the potential quantity of genetically identical animals that can be produced. This aligns with the context of discussing the scalability of pharming.

Meaning: 'Unlimited' means without limits or restrictions.

Wrong options:

• common: 'Common' describes the type of animals but does not fit the context of quantity.
• rare: 'Rare' means infrequently found, which contradicts the idea of producing many identical animals.
• identity: 'Identity' refers to characteristics and does not relate to the quantity of animals produced.
• grown: 'Grown' describes a state of development and does not pertain to the number of animals.
• prepared: 'Prepared' means made ready, which does not describe the quantity of animals produced.
• before: 'Before' is a preposition indicating time, which does not relate to the number of animals.
• babies: 'Babies' refers to young animals and does not describe the potential quantity of production.