Plant height control by 3 pair of polygene, two varieties of maize averaging 48 and 72 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 60 inches in height. What is number of average phenotype out of 500 F2 plants?

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#Question id: 561

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

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

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#Question id: 15150

#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, the F1 progeny shows will have red eye, what is the expected phenotypic ratio of red to white eyed insects in the F2.

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#Question id: 17278

#SCPH01 Biochemistry

In DNA isolation, which of the following enzyme remove/digest proteins in presence of SDS or chelating agent

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#Question id: 4359

#SCPH28 | Zoology

DNA methylation and histone acetylation are examples of which of the following processes?

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#Question id: 2684

#SCPH05 I Biotechnology

In DNA tertiary structure, what is a histone octamer?