What three possible models were suggested to originally describe the nature of DNA replication?
What will be an ideal response?
conservative, semiconservative, dispersive
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Members of this lineage are highly active, have a closed circulatory system, and have a high oxygen
requirement.
a. Cephalopoda b. Polyplacophora c. Bivalvia d. Gastropoda e. Scaphopoda
Your thigh bone, the largest bone in your body, is called the ________.
A. tibia B. fibula C. femur D. pelvis
From the perspective of population growth, what three major age groups does a population contain? Draw three age structure diagrams that roughly depict the proportion of these three age groups in an increasing population, a stable population, and a decreasing population.
What will be an ideal response?
In sticklebacks, females prefer to mate with males that have higher red color intensity. Why is the figure below consistent with runaway sexual selection as an evolutionary mechanism for the evolution of this preference?
a. Environmental factors cause brothers and sisters to have corresponding degrees of preference and intensity. b. Male trait and female preference are genetically correlated. c. Male trait and female preference are caused by the same genetic locus. d. The data shown in the figure are not consistent as they are far too noisy. e. B and C.