Is the working hypothesis proving to be valid? That is, does shell color appear to be under the control of a single gene with two alleles, where the dominant phenotype is red and the recessive is yellow?
a. Yes
b. No
a
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Which organism is a nitrogen-fixing symbiont of legumes?
A. Clostridium B. Nitrobacter C. Pseudomonas D. Rhizobium
Parapatric speciation occurs most often
a. within in the same home range. b. when a population extends across different habitats within the same home range. c. within a group of interbreeding populations. d. on either side of geographic barriers. e. by polyploidy.
Which of the following hypotheses support the basic principle of the species-area relationship? Check all that apply.
_____ Large areas have greater habitat diversity than small areas. _____ Organisms are less likely to go extinct in larger areas than smaller areas. _____ Larger areas receive more colonists than smaller areas. _____ Smaller areas have greater concentrations of resources then larger areas. 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 species richness? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
The enzyme used to carry out the polymerase chain reaction on DNA is
A. RNA polymerase. B. transcriptase. C. DNA polymerase. D. reverse transcriptase.