Which of the following bones is unpaired?
What will be an ideal response?
Frontal
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True or False. Only homologous characters are useful in constructing phylogenetic trees
A. true B. false
Collectively, what did the work of Charles Darwin, Francis Darwin, and Fritz Went demonstrate about phototropism in plants? Select all correct choices
A. A chemical signal is produced in shoot tips in response to light. B. A chemical signal is produced in shoot stems in response to light. C. Cells exposed to a chemical signal produced by light will grow (elongate). D. Cells exposed to a chemical signal produced by light will not grow (elongate).
What features are associated with the leaf epidermis? Check all that apply.
_____ Guard cells. _____ Trichomes. _____ Cuticular wax. _____ Pores. _____ Tracheids.
A "marker" in a genetic sense usually represents a site along a chromosome where a specific nucleotide sequence exists
Which specific phrase is used when such markers are identified by restriction endonucleases and a particular set of DNA fragments is generated?