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

Biology & Microbiology

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Which organism is a nitrogen-fixing symbiont of legumes?

A. Clostridium B. Nitrobacter C. Pseudomonas D. Rhizobium

Biology & Microbiology

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.

Biology & Microbiology

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?

Biology & Microbiology

The enzyme used to carry out the polymerase chain reaction on DNA is

A. RNA polymerase. B. transcriptase. C. DNA polymerase. D. reverse transcriptase.

Biology & Microbiology