Although insects and birds both have wings, the structures do not come from the same lineage and these species do not share a common ancestor. This would be an example of ______.
a. a homologous structure
b. a vestigial structure
c. an analogous structure
d. none of the above
c. an analogous structure
Biology & Microbiology
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The DNA sequence capable of pairing with 5' CGATTAGT 3' is:
A. 5' CGATTAGT 3'. B. 5' GCTAATCA 3'. C. 3' CGATTAGT 5'. D. 3' GCTAATCA 5'.
Biology & Microbiology
The GAG codon, which codes for glutamic acid, is mutated to GUG, which now codes for valine. What type of mutation is this?
A. silent B. missense C. nonsense D. frameshift E. base pair deletion
Biology & Microbiology
Cellulose is a major component of plants and is only directly digested by
A. herbivores. B. carnivores. C. termites. D. microorganisms
Biology & Microbiology
Milk production in women is stimulated by
a. estrogen. b. prolactin. c. oxytocin. d. prostaglandin. e. progesterone
Biology & Microbiology