Through each vertex of a triangle, a line parallel to the opposite side is drawn. The ratio of the perimeter of the new triangle,thus formed, with that of the original triangle is

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#Question id: 15258

#Unit 2. Cellular Organization

Complex media contain components like 

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#Question id: 15279

#Unit 5. Developmental Biology

Which of the following process is essential for successful syncytial specification?

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#Question id: 15654

#Unit 13. Methods in Biology

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. Next you isolate a mutation, designated MelB–, which gives uninducible melibiase activity. Mapping experiments show that MelB– is linked to Mel1. Using an F' factor that carries the chromosomal region surrounding Mel1, you perform the following genetic tests:

                      

Describe the basic genetic properties of the MelB– mutation?

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#Question id: 12491

#Unit 8. Inheritance Biology

Phenylketonuria shows autosomal recessive inheritance with an incidence of 1 in 10000. Assume that the population is in Hardy-Weinberg equilibrium. Which of the following is correct?

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#Question id: 9051

#Unit 9. Diversity of Life Forms

What would happen to the seasons if Earth were tilted 35 degrees off its orbital plane instead of the usual 23.5 degrees?