For example, red flowers and white flowers would breed flowers unless in the genetic material existed.

For example, red flowers and white flowers would breed pink flowers unless instability in the genetic material existed.

Note: The complete answers are provided in the explanation below

Explanation:

Prior to Mendel's work on genetics using pea plants hypotheses were proposed to explain heredity.

One of these hypotheses supported the blending concept of inheritance.

Most breeders acknowledged that both sexes contributed equally to offspring traits to create offspring with intermediate traits.

For example, red flowers and white flowers would breed pink flowers unless instability in the genetic material existed.

However, this model of inheritance didn't account for the presence of non-intermediate traits that exist in populations