Answer:
There are prion-like particles in the brain normally, and when these become abnormal they can cause disease. (Ans. A)
Explanation:
Prions are proteins which can trigger normal proteins to fold abnormally, and they are present in the brain. They are causing many types of neurodegenerative diseases in both humans and animals. Which are known as transmissible spongiform encephalopathies.
Prions can enter the brain with the help of infection, also can arise from the gene mutation that encodes the proteins, and sometimes this affects humans by infected meat.
If a person infected from prion disease, it affects central nervous system tissues like brain, eye tissues and spinal cord.
Answer:
B. 2 : 0 : 2
Explanation:
In a punnet square, the alleles would be Tt, Tt, tt, tt. So, you have 2/4 or 50% of the genotype Tt, and 2/4 or 50% of the genotype tt.
You want me to explain in my opinion? Or ...
Answer:
Advantages of classification:
- Allow us to see a species more detail than when we not classified it
- Catergorizing things, we can know them kind better and we can make judgement, opinion for the whole class in general
AND MANY OTHERS ADVANTAGES
Disadvantages of classification:
- Some classification is made by group, person and not everyone contribute, agree to that idea so there may lead to wrong classified
- And this classification stuff is made by HUMAN and it is just what human want species in this world to be classified, not nature classification!
Hope this helped :3
