Consider the scale up of a fermentation from a 10L to 10000L while maintaining geometric similarity. Agitation speed was maintained at 500 rpm in the 10L fermenter. If scale up is done based on constant tip speed, then the agitation speed in the larger reactor should be 

rpm. 

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#Question id: 3454

#SCPH28 | Zoology

Altruism is favoured when rb - c > 0 where c is fitness cost to altruist, b is fitness benefit to recipient; and r is genetic relatedness. It is under negative selection when

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#Question id: 7012

#SCPH01 Biochemistry

The differentiated cells divide but maintain their differentiated functions. The new cells do not come from stem cells, nor do they come from the dedifferentiation of the adult cells. Each cell produces cells similar to itself; no mass of undifferentiated tissue forms. This type of regeneration is:

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#Question id: 5077

#SCPH06 I Botany

Humans and mice heterozygous for loss-of-function mutations in Pax6 have:

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#Question id: 15149

#SCPH12 I Genetics

In this problem we will explore some of the many ways that mutations in two different genes can interact to produce different Mendelian ratios. Consider a hypothetical insect species that has red eyes. Imagine mutations in two different unlinked genes that can, in certain combinations, block the formation of red eye pigment yielding mutants with white eyes. In principle, there are two different possible arrangements for two biochemical steps responsible for the formation of red eye pigment. The two genes might act in series such that a mutation in either gene would block the formation of red pigment. Alternatively, the two genes could act in parallel such that mutations in both genes would be required to block the formation of red pigment.

Further complexity arises from the possibility that mutations in either gene that lead to a block in enzymatic activity could be either dominant or recessive. If the crosses is made between a wild type insect with red eyes and a true breeding white eyed strain with mutations in both genes. Such considerations yield the Pathways in series with recessive mutations in both genes, what will be the phenotype in F1 progeny?

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#Question id: 2646

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

How many stem loop structures play important role in complete system of tryptophan gene regulation?