Erwin Chargaff collected data on the proportions of nucleotides bases from the DNA of a variety of different organisms and somatic tissues and found that (A+G)/(T+C) ratios are always near to 1.0. Do you expect the (A+G)/(T+C) ratio would be different for the sperm samples? Why or why not?

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !