Each nitrogenous base has one counterpart. The purines are adenine and guanine and they pair with the pyrimidines thymine and cytosine, respectively. There are two hydrogen bonds between adenine and thymine and three hydrogen bonds between guanine and cytosine.
Prions are misfolded versions of normal proteins that can cause diseases. So the correct option is D.
<h3>What leads to prion disease? </h3>
A misfolded confirmation of proteins is called Prions. These misfolded proteins can result in harmful functional proteins and cause several diseases.
A prion is the type of protein that usually cause the normal proteins in the brain to fold in an abnormal manner. This results in misfolding of proteins in the brain.
Prion diseases are known to affect both humans and animals. Sometimes, humans get prion diseases by consumption of by meat from infected animals.
Creutzfeldt-Jakob disease is the most common prion disease in humans. The occurrence of prion diseases is rare. In the US, about 300 cases are reported every year.
Therefore the correct option is D.
Read more about prion diseases, here
brainly.com/question/13513153
#SPJ4
Answer:
An otter's den is called a holt or couch.
Explanation: Otters are found almost all over the world and in many wet habitats, such freshwater rivers, lakes, oceans, coastlines and marshes. Most otters live in dens — built by other animals, such as beavers — that are dug into the ground that have many channels and dry inner chambers
Answer:
The probability that both will be Rh-negative out of 99% Rh-positive is 0.01 x 0.01 = 0.0001.
Explanation:
The population contain 99℅ of Rh-positive. This represent almost all of the people.
However, there is still 1℅ chance of having an individual of Rh-negative.
Both of them will have the probability of 1℅ of having Rh-negative(0.01).
Therefore, Pr(Rh-negative AND Rh-negative) = 0.01 x 0.01. The result is approximately equals zero.
The both parents having Rh-negative, will have a dominant Rh-negative blood passed to their children, only recessive Rh-positive of 25℅ chance.
Since the chance of Rh-negative blood passed to their children is 75℅, it is inevitable that their children will be Rh-negative
