Mules are an example of:
a. hybrid breakdown.
b. hybrid inviability.
c. hybrid sterility.
d. macroevolution.
e. microevolution
C
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Phenotypic differences between the sexes are called sexual ____
Fill in the blank with the appropriate word.
The optimum temperature for coral formation occurs where the average annual temperatures are between ____ ?C and ____ ?C
a. 18, 20 b. 20, 23 c. 23, 25 d. 25, 27 e. 30, 40
Researchers introduce DNA into plants by using ____
I. bacteria II. electric shocks III. chemical shocks
a. I only b. II only c. III only d. II and III e. I, II, and III
Each of the following is part of the energy transduction from solar energy to chemical energy except
A) light absorption by chlorophyll. B) electron flow through an electron transport system. C) unidirectional proton pumping across a membrane. D) an electrochemical proton gradient. E) All are involved in the energy transduction.