Considering two species of birds, which of the
following is a derived character?
a. four limbs
b. a bony skeleton
c. egg production
d. feathers
e. two eyes
D
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A cell's DNA molecules contain its genetic material. DNA molecules contain patterns for the production of
a. proteins. b. amino acids. c. phosphates and sugars. d. four kinds of bases. e. proteins, amino acids, phosphates, sugars, and four kinds of bases.
The Human Genome Project took much longer to complete and cost more than was originally
anticipated.
Discuss the importance of twin and adoption studies to human behavioral genetics research. What will be an ideal response?
A/an _______ is one that is present in the common ancestor and all members of a group.
A. ancestral character B. clade C. character trait D. derived character E. analogous structure