which part of plant cell contains the genes alleles

The genes and alleles in a plant cell are contained within the nucleus. The nucleus is a membrane-bound organelle that houses the majority of a cell's DNA. It is often referred to as the "control center" of the cell because it regulates the cell's activities and contains the genetic information necessary for the cell to function.

To identify the location of genes and alleles specifically within the nucleus, you would need to use microscopic techniques such as fluorescence in situ hybridization (FISH) or immunostaining. These techniques involve labeling specific DNA sequences or proteins associated with genes or alleles, allowing researchers to visualize their location within the nucleus.

It's important to note that genes and alleles are segments of DNA, and they are present in every cell of an organism, including plant cells. They play a crucial role in determining an organism's traits and characteristics.