In Order to Examine an Opaque Object with a Compound

question 35

Multiple Choice

In order to examine an opaque object with a compound microscope, one must:

• A) use reflected illumination.
• B) light the object from beneath the stage.
• C) use transmitted illumination.
• D) use infrared analysis.
• E) stain the object before viewing it.

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Definitions:

Down Syndrome

A genetic disorder caused by the presence of an extra 21st chromosome, leading to developmental and physical changes.

Disjunction

The separation of chromosomes or sister chromatids during cell division, leading to the distribution of genetic material into daughter cells.

Chromosome 21

One of the 23 pairs of human chromosomes, an extra copy of which is associated with Down syndrome.

Linkage Map

A genetic map based on the frequencies of recombination between markers during crossover of chromosomes.