Answer:
1. A mildew-resistant pea may be crossed with a high-yielding but susceptible pea
2. The goal of the cross being to introduce mildew resistance without losing the high-yield characteristics.
Explanation:
Plants are crossbred to introduce traits/genes from one variety or line into a new genetic background. For example, a mildew-resistant pea may be crossed with a high-yielding but susceptible pea, the goal of the cross being to introduce mildew resistance without losing the high-yield characteristics.
What is variation in plant breeding?
It utilizes the genetic variation between individuals within a plant species and combines the desired properties into new and improved varieties. Plant breeding is dependent on genetic variation, and new variation is fundamentally important for introduction of new traits in breeding programs.
