1. mendel observed that pea plants had traits, such as color, that were either “one or the other,” never something in between. discuss the correlation between mendel’s factors, what they might be, and why pea plant traits come in one form or another—e. g., gray or dark red—rather than blended.

because a trait is either dominat or recessive and they can't both show at the same time. Even if both are present only 1 will show: homozygous dominate(AA), heterzygous(Aa), or homozygous recessive(aa).

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;