‘Heirloom tomatoes have not undergone the selective breeding process, so they may be less resistant to diseases and don’t yield as well as hybrids,’ says Charmaine. ‘Since heirloom ...

Here are some examples of what selective breeding can produce: Hens that lay big eggs of a particular colour. Cows that produce more meat or creamier milk. Tomato plants that produce lots of tomatoes.

Because they don’t have the option of domesticating the groundcherry over thousands of years of selective breeding, as agriculturists did with tomato plants, the researchers are using CRISPR-Cas9 gene ...

Here are some examples of what selective breeding can produce: Hens that lay big eggs of a particular colour. Cows that produce more meat or creamier milk. Tomato plants that produce lots of tomatoes.