As various vertebrate groups evolved, the structure of the heart changed. which of the following describes the heartsame of birds and mammals?
a) one atrium and one ventricle
b) two atria and one ventricle
c) one atrium and two ventricles
d) two atria and two ventricles

Dominance the dominant allele doesn’t fully mask or hide the recessive. for example, a red carnation with a white carnation will produce a carnation. one gene one trait. well most of the time than one gene controls a trait. we are all different but genetically speaking we are % similar with regards to genetic makeup.

Which food could be transported in a galvanized metal container?

Which plate boundary causes plates to collide forming mountain ranges, volcanoes, and island arcs? give an example of this type of plate boundary. 2. at which plate boundary do rifts and mid-oceans ridges form? give an example of this type of plate boundary. 3. at which plate boundary do plates slide past each other while moving in opposite directions? give an example of this type of boundary.