I. treating the substance with nucleases that destroy all nucleic acids and then determining whether it is still infectious
Explanation:
Analysis of the nature of the specimen like the infectious agents (bacterium, virus, viriod, or prion) is very important to diagnose the diseases caused by them, investigate disease outbreak, to determine the clinical course of the infectious disease etc.
There are many methods like direct detection, cultivation assays, serological assays to detect the pathogen type.
Molecular techniques like polymerase chain reaction (PCR) is done to further analyze or investigate the pathogen, like its microbial genome, the virulence factor etc. These are amplification methods which help to investigate the pathogenesis and disease progression. PCR method involves denaturing the DNA polymerase which is a nuclease type of enzyme. Nucleases are present with exonucleases and endonucleases, both of which acts at specific points on the DNA of the pathogen and will create new templates .
I<span>t is important for Mendel to study such a large sample of pea plants to determine the probability of inheritance because</span> higher sample size gives more accurate results.
>>>Mendel coined the terms “recessive” and “dominant<span>” in reference to certain traits.One best association to this is is his study about pea plants. According to him, green peas are recessive and yellow peas are dominant.</span>
These three factors affect how variations in genotype arise in a population:
<span>1) Sexual recombination- one-half of the parent 1 and one-half of parent 2’s genes are combined to form a brand new gene for the offspring resulting to a new type of combination that is not existing before.
2) Gene crossover- this is the trade-in of genetic material from two cells that each contains a pair or 1 maternal strand and 1 paternal strand of the parents chromosomes (Homologous).
</span>3) Chromosome aberration- it is a mutation in the chromosome wherein there is an extra or missing part of the DNA. <span> </span>
Answer: Sulfa antibiotics target a specific enzyme that inhibits bacterial growth. ... Viruses are unaffected by antibiotics because they do not have peptidoglycan cell walls or ribosomes, and they do not replicate their own DNA. Bacteria can become resistant to antibiotics through the process of selection and evolution.
Explanation:
Answer:
The inside of Neptune is very cold, which is about -214 degrees. Hence, no microorganisms could live there. Overall, the environment of Neptune sounds very unfriendly to life as we know it on earth.
