27. Studies using micro arrays have the benefit that a. they are automated b. th

Question

27. Studies using micro arrays have the benefit that

a. they are automated
b. they are quantitative
c. they examine thousands of genes simultaneously
d. they do everything on the lines above

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28. Studies of cellular transcription patterns across an animal's lifetime only make sense if
   a. the animals were born at the same time
   b. the rates of transcription are identical in all animals
   c. the same tissues are examined each time
   d. protein synthesis mirrors transcription

Explanation / Answer

27.option d is the correct answer

DNA microarray helps to examine thousands of gene expression and their product interaction simultaneously by observing the intensity of fluorescence.

mRNA samples are collected and tagged with different coloured tags.cDNAs are added so that it can hybridise expressing the tag.if the genes are highly active the fluorescence is bright in comparison to less active gene which produce dimmer fluorescence

hence microarray studies are automated,quantitative and examine thousand genes simultaneously

28.option c is the correct answer

transcription is the process of RNA synthesis.if we want to study the cellular transcription pattern of an animal's lifetime i.e whether the rate in showing any variation we must study the same tissue at different times which will help us to compare accurately and hence will get a pattern

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