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In the co-dominance, both the traits are equally expressed. This is the kind of incomplete dominance. When the red (RR) homozygous flower is paired with the white (WW) homozygous flower, the result will be the pink color flower. In this, there is a combination of the phenotype of both the participating alleles.įor example, the color will be homozygous for either white (rr) or red (RR) in the snapdragon flower. Hence it is said as intermediate inheritance, where the phenotype which is produced is the third type. When one allele for a particular trait is not able to express completely over its paired allele, is called the incomplete dominance. The new phenotype expressed is the combination of two phenotype and their alleles. The new phenotype contains no allele of its own. Red flower (RR) X White flower (rr) = Red and White flower (Rr) The independent effect is produced of the two alleles. For instance Red flower (RR) X White flower (rr) = Pink flower. The intermediate effect is seen, of the hybrid of the two alleles. The hybrid will always give rise to new phenotype. Here both the alleles equally blend and show their equal effects. Though both the allele blend their effect, one of the two is more noticeable. Roan character in cattle, A and B blood group in human. Neither of both the allele is dominant and give a new trait. The condition when both the alleles of a gene are dominant, and the traits are equally expressed, called as Co-Dominance.

The condition when neither of the alleles is dominant, rather combine and display a new trait by mixing of the two alleles is called as Incomplete Dominance. Content: Incomplete Dominance Vs Co-Dominance The main difference lies in the pattern of gene expression. Although there is the lot of confusion between incomplete dominance and co-dominance. Usually, heterozygous dominance is noticed in animal cells like in the case of complete dominance, co-dominance, and incomplete dominance. These paired alleles can be heterozygous (having different alleles) or can be homozygous (having identical alleles) for a given trait. There are typically two alleles, for each trait or characteristics inherent by the animal cells. Genes are the segments of DNA located on the chromosomes, which are passed from one generation to the other.

As stated by Gregor Mendel, traits are inherited by the transfer of genes from parents to their offspring.