Having two different genes (alleles) for a trait, sometimes called hybrid, is
considered-

heterozygous

Explanation:

An allele whose trait always shows up in the organism when the allele is present. ... having two of the same genes for the trait (sometimes called purebred). heterozygous. having two different genes for a trait (sometimes called hybrid).

what bodys are there orbiting?

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.