It is because when alleles show a co-dominant relationship , neither allele is dominant and both are expressed in the phenotype of the heterozygote. The human ABO blood groups provide a good example of codominace. The ABO system is due to a gene that codes for molecules on the surface of red blood cells
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its called systolic heart faliure or heart faliure with reduced ejection fraction
No. The natural selection is when the best suit fits survive. Therefore is not the idea that as an environment changes.
Cystic fibrosis affects more than 200,000 people in the United States so false.
