Scientists use restriction to "clip" dna for use in gene therapy.

Enzyme.

Explanation: Scientist use restriction enzyme to "clip" DNA for use in gene therapy. This enzyme helps in cleaving the DNA by either sticky ends or blunt ends so that the gene of interest can be incorporated in the host DNA.

This clipping of a DNA segment is done for using the DNA for producing vital products. The products can be therapeutic, agricultural, commercial et cetera.

The small fragment of the DNA( host cell) is replaced by the DNA of the organism having gene of interest, the gene of interest gets incorporated into the DNA(host) and starts replicating.

This replication produces the desired products in the host cell which is extracted out of the cell to be used by us.

thinking it would be physical characteristics

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

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