The same basic array of bones is modified to give rise to the wing of a bat and the fin of a porpoise. Such anatomical structures are called:
A. inherited.
B. homologous.
C. analogous.
D. uniform.
E. evolutionary modifications.
Answer: B
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In order for the scientists to artificially select Drosophila for their number of bristles,
In the laboratory, fruit flies (Drosophila) were artificially selected for the number of bristles on their bodies. One population (R) was selected for low numbers of bristles, a second population (S) for high numbers of bristles.
A. no change was seen; it's much too soon.
B. some slight increase of bristle numbers was already evident.
C. a vast, overlapping range of bristle numbers was seen.
D. a slight increase in bristles in S, a slight decrease in R, with a little overlap in the middle ranges.
E. a huge increase in S, a huge decrease in R, with no overlap whatsoever.
Four of the five features listed below are similar
evolutionary characteristics in Homo. Select the exception. a. small, thin face b. high skull c. large cranial capacity d. larger body size e. specialized teeth
A particular virus consists of only DNA and proteins. Viruses attach to the surface of a host cell and inject the viral DNA into the host. The host cell then copies the viral DNA and makes new viruses. Eventually, the host cell is killed, and the new
viruses are released. These new viruses search for new hosts to continue the cycle. Identify and apply at least three characteristics of life to justify whether a virus is a living thing. What will be an ideal response?
Which of the following families of DNA viruses is the most prevalent in humans?
A) Poxviridae B) Herpesviridae C) Adenoviridae D) Polyomaviridae E) Rhinoviridae