which genetic codon of hemoglobin beta gene is mutated and what that mutation is? as in case of mutation in 7th genetic codon of hemoglobin GAG is altered to GTG and causes sickle cell disease?

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Reactants undergo chemical reaction to form products. this chemical equation represents one such reaction. the coefficient for one of the reactants or products is incorrect. which part of the chemical equation is incorrect?

The lineage of pea plants produced round seeds for four generations. the plants that fertilized these pea plants also produced round seeds. however, in the fifth generation, the plant produced to two plants with wrinkled seeds. can that be possible?