Organisms that possess homologous structures probably __________.

The critical period for major anomalies is longest for the _____ system.

The bird says____

In cladistics, _______________ is(are) the primary criterion used to classify organisms.

Is the accompanying figure dna or rna? ________ is the arrow closest to the 5' or 3' end? ________

In eukaryotes, the normal or default state is that genes are turned _____.

Parts of the ____ are important for learning about rewards and punishments.

Part a in the diagram below, the gray unit represents _____.

Our brain enables us to do all the following except __________.

New branches form on the tree of life through the process of __________.

Natural systems involve ________ with complex interactions.