According to the biological species concept, members of the same species look alike primarily because
they
a. live in the same environment
b. experience gene flow, which mixes their genetic material
c. have a common ancestor
d. have stopped evolving
e. are adapted to the same life style
B
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The copying of DNA before cell division is referred to as DNA ________.
What will be an ideal response?
A patient, Jennifer, presents in an emergency room (ER) with severe stomach cramps and diarrhea. She was recently swimming in unclean water. Which protist would be the most likely cause of her symptoms?
A. Leishmaniasis B. Plasmodium C. Giardia D. Toxoplasma gondii
Which of the following is the smallest unit of an element that still retains the properties of the element?
A) the electron B) the cell C) the atom D) zthe molecule E) the proton
Permease proteins that aid in the transport of nutrients resemble enzymes in their specificity for the substance to be transported. Each carrier is selective and will transport only a closely related set of substances.
Answer the following statement true (T) or false (F)