Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most similar to which of the following reproductive isolating mechanisms?

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#Question id: 11537

#I Life Science/ Life Sciences Group – I-V

Testosterone is an example of a chemical signal that affects the very cells that synthesize it, the neighboring cells in the testis, along with distant cells outside the gonads. Thus, testosterone is an example of ________.

 I) an autocrine signal

 II) a paracrine signal

 III) an endocrine signal

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#Question id: 106

#SCPH28 | Zoology

fatty acid designated as 20:0 is ________, while one that is designated 20:3 D5,8,11 is

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#Question id: 19199

#SCPH01 Biochemistry

Example of calorimetric biosensor could be

1. Hydrogen peroxide and Catalase 

2.  Glucose oxidase

3. HCG and antibody 

4. Peptides and trypsin

Which among the following is the example?

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#Question id: 4341

#SCPH06 I Botany

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would be most likely?

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#Question id: 936

#SCPH01 Biochemistry

At neutral pH, the main ionic form of ammonia is ________.