All the alleles of a gene or genes present in a given individual.

Genotype

Explanation:

Genotype refers to the genetic constitution of an individual. It represents all the allele combinations of a particular gene or alleles of various genes present in the genome of the organisms and constitutes the genetic makeup of an individual. For instance, if an individual has I^A and I^B allele for ABO blood type, the genotype of the individual for the ABO blood type gene is "I^A I^B". Likewise, "TT" and "tt" represent the genotype of a pea plant having both the same type of alleles for the stem height gene.