1. What is a significant piece of evidence that was used in the 1800s to suggest
Earth is very old?

Dna replication or repair occurs in a cell in all of thw following situations except when

In a cladogram, what occurs at a node? a derived trait appears. evolution is stopped. an ancestor dies. the cladogram ends. aa as s as ss what are the chances that their offspring will have sickle cell anemia? 0% 25% 50% 100%

Adistinctive characteristic of mammals that is not observed in other vertebrates is