Inactivation of both gene copies may result in a change in cell phenotype distinguishable from the wild-type phenotype.

Recombinant polynucleotides and methods for modifying the phenotype of a plant are provided.

Recombinant polynucleotides and methods for modifying the phenotype of a plant are provided.

Methods for altering the oil phenotype in plants using such nucleic acid fragments also are disclosed.

The preparation and use of nucleic acid fragments useful in altering the oil phenotype in plants are disclosed.

The invention also provides methods and compositions for altering the phenotype of cells and for treating diseases characterized by hyperproliferation of cells.

A method of altering the phenotype of a bird comprises introducing a DNA sequence into somatic cells of a bird contained within an egg during in ovo incubation.

A method of altering the phenotype of a bird comprises introducing a DNA molecule into the muscle tissue of a bird contained within an egg during in ovo incubation.

The DNA sequence is selected to be effective to cause a change in phenotype, such as an increase in growth rate, feed efficiency, or both in the bird after hatch.