I believe the answer is a. crossing over
        
             
        
        
        
Should be decontamination because you are removing the pollution that has been dispersed.
        
             
        
        
        
The two world wars chaos many writers, visual artists and musicians to deeply present their tragic experiences in this horrible times. These were the times where people were scared or questioned the days they have left and survival was at the top of the chart. One example of an art expression is 
Gassed, 1919, by John Singer Sargent. 
 
        
        
        
Answer:
Dominant genes mask recessive genes.
Explanation:
Alleles are different variations of a gene. Every person has two alleles - one from each of their parents. Depending on whether it is expressed, an allele can be dominant or recessive. 
A dominant allele is the one that is expressed even if the individual has one dominant and one recessive allele. This means that dominant alleles mask recessive alleles. 
An example of a dominant allele is the one for brown eyes. This means that you need only one allele of this type to have brown eyes, which is why brown eyes are the most common.
 
        
             
        
        
        
Conventional genetic analyses of rRNA  sequence is not possible for prions because they don't contain nucleic acid.Prions do not contain genetic material such as - DNA and RNA.
The unique traits and genetic material information are encoded with the conformation structure and modification of protein.Prions which are responsible for transmissible sponginess encephalitis  is mammals which all known prion disease affect the neural tissues.
There are 253 amino acids exist in multiple conformations and isoform which is found in healthy organisms, most extensively studied proteins. Prions are not destroy easily and remains intact in the presence of radiation , disinfectant and extreme heat.
To learn more radiation here
brainly.com/question/13934832
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