Answers created by Anna G.

• Back to user's profile
• Mary(blood type A) has a child who is blood type O. What is Mary's genotype?
  
• Dinosaurs are originated: (i) much before mammals (ii) before mammals (iii) with mammals (iv) after the evolution of mammals The correct answer is (iii). Can you please explain how?
  
• What is caused by glacial periods?