What do scientist use to grow new plnts from cutting of other plants

If the conditions are suitable, the plant piece will begin to grow as a new plant independent of the parent, a process known as striking. A stem cutting produces new roots, and a root cutting produces new stems. Some plants can be grown from leaf pieces, called leaf cuttings, which produce both stems and roots.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.