<prompt> The test result of which investigation done, for a child with developmental delay is shown below?Multiplex Ligation-dependent probe AmplificationDNA microarrayFluorescent in situ hybridisationChromosomal painting  <response>: DNA microarray is used to identify thousands of different gene expressions at the same time- Recommended for unexplained intellectual disability. Fluorescent in situ hybridisationChromosomal painting- uses fluorescent probes for specific chromosome Multiplex Ligation-dependent probe Amplification- uses specific markers for specific region of chromosome 