Fossils
Vestigial structures
Homologous structures
Molecular evidence
Comparative embryology
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Answer: The Chesapeake Bay is the largest estuary in the United States. The bay provides vitally important habitats for wildlife, lots of recreational opportunities for people, and is an important fishery upon which both people and wildlife depend.
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