1) The units of inheritance are A) twins

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1) The units of inheritance are

A) twins.

B) genes-

C) heredities.

D) metabolic activities.

E) evolutions.

2. Which of the following includes other levels of hierarchy?

A) kingdom

B) domain

C) family

D) phylum

E) order

3. The first step in the scientific method is to

A) propose a solution.

B) draw a conclusion.

C) perform an experiment.

D) predict the results of an experiment.