A plot of population size vs time that displays a J-shape is indicative of
A. parasitism.
B. exponential growth.
C. logistic growth.
D. K-selection.
E. r-selection.
B. exponential growth.
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Bacteria make up about one-third the weight of fecal matter
Indicate whether the statement is true or false.
A seed that lands in the forest soil is homozygous mutant for the CONSTANS (CO) gene, and as a result does not produce any functional CONSTANS protein. What do you predict will happen during the development of this seed?
A. It will germinate and grow vegetatively, but will never produce flowers. B. It will fail to germinate. C. It will germinate and grow vegetatively, and then it will produce flowers earlier than wildtype. D. It will germinate and grow vegetatively. If it is from a photoperiodic species, it will fail to produce flowers. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about the CONSTANS gene? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Why are pea plants (Pisum sativum) a good species for genetics studies?
A. They have many distinctly identifiable forms of genetic traits.
B. They can be self-fertilized for true-breeding genetic traits.
C. They produce large numbers of offspring (the peas).
D. All of the answer choices are correct.
E. Growth of pea plants is simple and easy.
DNA is a macromolecule that stores information. Which component of the DNA is the source of this information?
A) the phosphate group B) the sugar C) the histone D) the base E) the ladder