What is suggested by similar bones in vertebrate fossils and present day vertebrates

Why are common names a problem for scientist?

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.

What do well call it when two or more genes determine an organisms trait? a.polygenic b.controlled by one gene c.mutated