explain how Sickle Cell Anemia came about in the DNA sequence and how it affects the protein synthesis of hemoglobin.. 1 paragraph

Q: a pair of homologous chromosomesa) always has the same genes and the same allows b)always has the same genes c)always has the same alleles d)never has the same genes

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart