Mendel crossed tall pea plants with dwarf ones. The F1 plants were all tall. When these F1 plants were selfed to produce F2 generation, he got a 3: 1 tall to dwarf ratio in the offspring. What is the probability that out of three plants (of F2 generation) picked up at random all three would be dwarf?

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#Question id: 19831

#Unit 12. Applied Biology

Expression of the avr gene would produce the elicitor that would be recognized by the corresponding R gene product; this recognition will initiate and culminate in

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#Question id: 4570

#Unit 11. Evolution and Behavior

Which pair would probably have agreed with the process that is depicted by this tree?

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#Question id: 4394

#Unit 3. Fundamental Processes

A new insulin gene was isolated and a study was planned to look at the function of the promoter region. Which of the following would be the best choice for this study?

A. southern analysis

B. immunoblotting

C. reporter gene assay

D. PCR

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#Question id: 30091

#Unit 2. Cellular Organization

Which is not true of transposable elements?

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#Question id: 22939

#Unit 5. Developmental Biology

CO gene expression appears to be highest in the companion cells of the phloem of leaves and stems, the downstream target gene of CONSTANS is