Which of the following best expresses the concept of natural selection?
A) reproductive success influenced by inherited characteristics
B) inheritance of acquired characteristics
C) change in response to need
D) a process of constant improvement, leading eventually to perfection
Answer: A
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Polyplacophora, Gastropoda, Bivalvia, and Cephalopoda are all lineages within the phylum
a. Rotifera. b. Mollusca. c. Platyhelminthes. d. Annelida. e. Nemertea.
An excitatory postsynaptic potential
a. is only one of several types of graded potential. b. has a hyperpolarizing effect. c. will drive the membrane away from its potential. d. is summed with an inhibitory postsynaptic potential at the input zone of a neuron in a process known as synaptic integration. e. is none of these.
Before Mendel's work was rediscovered, some argued that natural selection would not work because favorable traits would merge into existing traits over time and become lost. This hypothesis is known as ________. [two words]
Fill in the blank(s) with correct word
An examples of a plant disease caused by an ascomycete is:
a. a microsporidial infection. b. stem rust of wheat. c. histoplasmosis. d. chestnut blight. e. corn smut.