Answer:
4 chemicals
Explanation:
There are mainly 4 steps of gram staining.
1- crystal violet stain drained on the heat fixed slide.
2- then wash the slide and use iodine.
3- then wash the slide with water and use acetone as a decolorizer.
4- then use safranine as a counter stain.
So there are a total of 4 chemicals used named crystal violet, iodine, acetone, and safranine.
<span>Genetic defects are associated with both abnormal autosomes as well as abnormalities in the gender-based chromosomes. Autosomal abnormalities occur if there is an abnormality on any of the first 22 pairs of chromosomes. The abnormality is linked to gender if it occurs on the twenty-third chromosomal pair. Both of these abnormalities are due to chromosomal errors or genetic mutation.
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<span><span>Downs Syndrome is a common genetic disorder that causes developmental delays and health problems. This disorder occurs when the person has extra genetic material added to the twenty-first chromosome. </span>
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Meiosis, also called reduction division, is cell division necessary for the formation of gametes (sperm and eggs). In this type of division, diploid cell (with two sets of chromosomes) forms haploid cells (with a single set of chromosomes). The haploid number is produced during the meiosis I (anaphase I) when homologues pairs, not individual chromosomes, separate.