Chemical damage to DNA can occasionally occur just before DNA replication begins. If the repair system does not have enough time to correct the error before the DNA is duplicated, this can give rise to mutations. In the sequence TGATT, if the adenosine is depurinated and not repaired, which of the following is the point mutation you would observe after this sequence of DNA has gone through two rounds of replication? a. TGATT
b. TGTTT
c. TGGTT
d. TGTT
e. TATT

80 points pls brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?