Two codominant alleles exist-one controlling high and the other low expression . heterozygotes typically have 500-600 copies per erythrocyte.
2.
ABAT in liver and brain is controlled by 2 codominant alleles with a frequency in a Caucasian population of 0.56 and 0.44.
3.
Two codominant alleles have been characterized, DNASE2 * L ( low activity ) and DNASE2 * H ( high activity ), that differ at one nucleotide in the promoter region.
4.
Is there any term for a heterozygous phenotype of two codominant alleles which cannot be produced as a monohybrid cross, but " can " arise in a dihybrid cross with a third allele on each side?