heterozygote

/HH EH0 T ER0 AH0 Z AY1 G OW0 T/
noun
  1. 1

    A diploid individual that has different alleles at one or more genetic loci.

  2. 2

    A bacteriophage that has two different copies of its genetic material and so produces two types of offspring.

Source: https://en.wiktionary.org/wiki/heterozygote