In 2000, maize hybrids that had twice the amount of amino acids, ____ and ____ compared to existing maize hybrids were developed. This is an example of _____ .

Options

A. Lysin, argenine, biofortification
B. Methionine, tryptophan, biolistic
C. Lysin, tryptophan, biofortification
D. Methionine, tryptophan, biofortification

Answer

To answer the question, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Year and Context**: The question mentions that in the year 2000, maize hybrids were developed. This indicates a specific event in plant breeding.

2. **Understand the Concept of Hybridization**: Hybridization is a technique used in plant breeding to combine desirable traits from two different plants. In this case, the goal was to enhance the nutritional quality of maize.

3. **Recognize the Nutritional Improvement**: The maize hybrids developed in 2000 had twice the amount of certain amino acids compared to existing hybrids. Amino acids are crucial for various bodily functions.

4. **Identify the Specific Amino Acids**: The transcript mentions that the two amino acids that were increased in quantity are lysine and tryptophan. These are essential amino acids that are often limited in conventional maize.

5. **Define the Process**: The development of these maize hybrids is an example of biofortification. Biofortification refers to the process of increasing the nutritional value of food crops through conventional plant breeding methods.

6. **Fill in the Blanks**: Based on the information gathered:
- The two amino acids are **lysine** and **tryptophan**.
- The process is called **biofortification**.

### Final Answer:
In 2000, maize hybrids that had twice the amount of amino acids, **lysine** and **tryptophan** compared to existing maize hybrids were developed. This is an example of **biofortification**.

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