8. A white flowered plant is crossed with a plant that is
heterozygous for the trait. What percentage of the
offspring will have purple flowers?

A white flowered plant is crossed with a plant that is  heterozygous for the trait. What percentage of the  offspring will have purple flowers?

WW x Ww= WW, Ww, WW, Ww

None will be purple as all the offspring will be white, although purple flower could emerge as a result of mutation which entails sudden change of the gene

Explanation:

Phrase. Denotes a system of thought that predominantly considers things in an "either, or", "right, wrong", "black, white" way, ignoring any subtleties or consideration of third or more alternatives.

In philosophy, this is know as a "bifurcation fallacy".

People who habitually think in this way are usually fairly unintelligent and unimaginative.

G.W. Bush: "You're either with us, or your with the terrorists".

Me: "Wow, Bush can only seem to understand the world through binary thinking..."