What is a heterozygous organism?

Heterozygous organism has two different alleles for the gene. The opposite of a heterozygous organism is a homozygous organism that has two alleles that are the same for this specific gene. Genes can exist in more than one form and different forms are called alleles. The alleles code for different types of the same characteristics.

The genes are found in the DNA along the chromosomes. At the core, most of the living things have two chromosomes. A pair of complementary chromosomes with a gene in the same place are called homologous chromosomes. Genes may exist in many forms, but the organism may not have more than two different gene alleles. Genetic combinations or genotypes are what creates a possible appearance or behavior of cells, phenotype. How different gene alleles are what determines the phenotype.

may be dominant or recessive. If one allele is completely dominant over another, the characteristic of this allele is what is expressed by the organism whenever the dominant allele is present. Only when you have two recessive alleles presentY, homozygous recessive will see recessive characteristics. It is impossible to say whether soemtomitouss is homozygous or heterozygous organism for the dominant property without genetic testing.

with complete dominance is one single dominant allele often as effective as two copies in determining properties. The organism, which is heterozygous, will seem the same as if it were homozygous dominant. This is just the case where one allele is completely dominant over other forms. While many characteristics show this model of inheritance, there are also many that are not.

other organisms show partial or incomplete dominance in inheritance of characteristics. In this model, heterozygous organism differs from both homozygous forms. An example of incomplete dominance is clearly listed in Snapdragons, where the allele for red is dominant to white. When you cross the red Snapdragons with a white, not only DostaNETE red and white offspring, you can also pink. Pink offspring are heterozygous organisms.

with partial dominance is heterozygousness depicted by a phenotype, which is between two homozygous states between two homozygous states. This is clearly depicted by the Snapdragon example, where the pink is intermediate to red and white. This is just one example of incomplete dominance, not everyone shows such a different intermediate heterozygous state.