I think it determines the level of disinfection or sterilization required for reusable medical devices. The level of terminal processing required by medical services is based on the classification system developed by Spaulding in 1970. It divides medical devices into three categories, based on the client/patient/resident's risk of infection due to contact with various types of devices. It is widely used for matching the disinfection and sterilization of surfaces, particularly those of re-usable medical/surgical devices, with available processes.
Answer:
B)Prophase,Metaphase,Anaphase,Telephase
Explanation:
Prophase:At this stage,the chromatin threads condense to form distinct chromosomes, long and thin at first,later become shorter and fatter. Nucleolus disappears, nuclear membrane disintegrates, series of spindle (protein) fibres are formed spanning the cell from end to end.
Metaphase:Here, Chromosomes migrate to the central plain of the cells and arrange themselves round the equator of the spindle, attached by centromeres to be 'spindle fibres' microtubule.
Chromatids of each chromosome move slightly apart at the centromere regions,the sister chromatids being oriented towards opposite poles
Anaphase: Chromatids belonging to each chromosome part company and move towards opposite poles of the spindle, probably by a pull from the spindle fibres attached to the centromere which shortens.
Telephase: Chromatids reach the polar ends of the spindle and become densely packed together. Cell divide into two. Spindle fibres break down, centrioles replicate. Nuclear membrane is re-formed. Nucleolus reappears. Chromosomes gradually uncoil and return to their original thread-like form i.e, Chromatin threads.
Answer: okay so it would be three dominant and one recessive
Explanation:
Answer:
All these choices are correct
Explanation:
YACs stands for Yeast artificial chromosomes. These chromosomes are derived from a fungus species Saccharomyces cerevisiae. YACs are genetically modified and a 100—1000 kb fragments of DNA are inserted into a bacterial plasmid. The inserted DNA fragment can be cloned and physically mapped. In the presence of this fragment, the chromosome will be stable during extracellular replication and easily can be differentiated from colonies without the vector.
DNA is forms a double helix shape/strand. The rule of base pairing is pretty much something that you just need to know by heart. A (adenine), T (Thymine), G (Guanine), and C (Cytosine) and the 4 bases that make up DNA.
***** The most important part is to know that A always pairs with T and G always pairs with C *****
So, the double helix strand of DNA is made up of two strands - kind of like a ladder - one strand is the original, while the other is a replicate of the original strand that is formed through different steps of polymerase reaction etc.
So, for example, let's say strand 1 has this code: ATGCTAGCTGATCG (I made this up, probably doesn't code for anything). But, knowing this, what will it's replicate of second strand look like?
Original strand: ATGCTAGCTGATCG
Replicate Strand: TACGATCGACTAGC
So, you can see from the above example that to form the replicate strand, you just insert the base that pairs with the one from the original strand. A-T and G-C!
Hope that helped!