Describe the specific dna changes that produce the abnormal sickle cell hemoglobin

What is a traditional chinese touch therapy involving finger pressure applied to specific areas of the body to restore the flow of qi.

Astudent analyzed ears of corn that demonstrated two traits in the f2 kernels, purple or white colors and smooth on wrinkled shapes. a tabulation of 135 individual kernels gave the following results: purple and smooth = 75 white and smooth = 28 purple and wrinkled = 24 white and wrinkled = 8 what would be the only phenotype present in the f1 ger

I’m stuck on this question cuz i’m stupid sksksksk