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Farheen98 Farheen98
wrote...
7 years ago
All of the following are correct statements about the DNA microarray tool except that
A. individual cells contain a nucleic acid sequence that bind with one of the mRNA molecules during gene expression.
B. it is scanned and analyzed to compare patterns of gene expression in each cell.
C. it allows scientists to analyze the activity of thousands of genes at once.
D. it provides a pattern of bands into which DNA fragments sort by mass and charge.

All of the following are correct statements about the purpose of DNA microarray technology except to
A. place a fluorescent chemical tag in DNA to locate a specific gene marker for a trait
B. identify genes that are responsible for specific functions
C. compare genes expressed in normal healthy cells with those in cancerous cells.
D. compare the genes expressed by the same cell in various environments.
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wrote...
7 years ago
Hi Farheen, this information should help you determine the correct answer:

A DNA microarray (also commonly known as DNA chip or biochip) is a collection of microscopic DNA spots attached to a solid surface. Scientists use DNA microarrays to measure the expression levels of large numbers of genes simultaneously or to genotype multiple regions of a genome. Each DNA spot contains picomoles (10−12 moles) of a specific DNA sequence, known as probes (or reporters or oligos). These can be a short section of a gene or other DNA element that are used to hybridize a cDNA or cRNA (also called anti-sense RNA) sample (called target) under high-stringency conditions. Probe-target hybridization is usually detected and quantified by detection of fluorophore-, silver-, or chemiluminescence-labeled targets to determine relative abundance of nucleic acid sequences in the target. Face with Rolling Eyes
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