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Incomplete dominant alleles.
the scientific terms used to describe when neither alleles are dominant nor recessive is codominance
The dominant allele.
heterozygous
Incomplete Dominance
Incomplete Dominance
Co-dominance
Two recessive alleles can not take over a dominant allele because there are only two alleles in a pair. This can only happen if there is a mutation because the dominant always takes over the recessive.
A heterozygous condition resulting in the dominant genes expression in the phenotype.
The corresponding pair of chromosomes may homozygous as well as heterozygous, depending on the presence of dominant and recessive genes.
Genes in a pair interact with each other through a process called dominance. Dominant genes mask the effects of recessive genes, determining the traits that are expressed in an organism. This interaction between genes in a pair helps determine specific traits in an organism by influencing which genes are passed on from parents to offspring.
This is called co-dominance. Both alleles are expressed. For example, if white and red in a flower are co-dominant, the offspring will have both red and white petals in a flower. See link below: