You read in National Geographic that a team of archaeologist recently completed an examination of 18 skeletons from people buried under tons of volcanic ash 1200 years ago. By analyzing the bones, the scientist were able to determine the sex, physical health,(including a partial medical history), approximately age, and even […]

1. (a) What is the structural difference between all deoxyribonucleotides and all ribonucleotides and why does this make DNA more appropriate to act as the genetic material than RNA.(b) Why is uracil replaced by thymine in DNA? (4 points)(c) Can ribonucleotides base-pair with a deoxyriboncleotides and if so when does […]

Q1. Imagine the allele controlling brown eyes B, is dominant over that controlling blue eyes b, in human beings. A blue eyed man marries the brown eyed woman and they have six children all brown eyed. What is most likely genotype of the father? Mother? If the seventh child had […]

Q1. A girl developed generalized seizures. A CT scan revealed a single brain lesion consistent with a tumour. Biopsy of the lesion showed a cysticercus. The patient lived in South Carolina and had never travelled outside the state. What parasite caused her disease? How is this disease transmitted? How might […]