Body parts that appear similar because they have evolved from a common ancestor are called ________
a. morphological divergences
b. homologous structures
c. analogous structures
d. vestigial structures
e. morphological convergences
b
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Which of the following scenarios will most likely trigger an action potential? Select all correct choices
A. multiple EPSPs arriving quickly at a single synapse (temporal summation) B. single EPSPs arriving simultaneously at two or more different synapses (spatial summation) C. an EPSP and an IPSP arriving simultaneously (cancellation)
In animals that display indeterminate development
A. embryonic cells have a predetermined fate. B. bilateral symmetry cannot develop. C. early embryonic cells, if separated from the embryo, can develop into complete organisms. D. embryonic cells show spiral cleavage. E. the blastopore develops into the mouth.
DNA methylation is a form of transcriptional regulation by eukaryotes
____________________ Indicate whether the statement is true or false.
What characteristics allow conifers to dominate cold, dry habitats?
What will be an ideal response?