Answer: The probability that the two children have the disease is 1/16 or 6,25%
Explanation: If the disease only occurs in homozygous individuals and the parents have the trait but not the disease that means is a recesive allele and the parents are heterozygous for this trait.
According to proportions stablished by Mendel, when there is a cross between 2 heterozygous (Ss x Ss) indivdials the probability to obtain a homozygous recesive (ss) descendant is 25% or 1/4 as shown in punnet square below:
![\left[\begin{array}{ccc}&S&s\\S&SS&Ss\\s&Ss&ss\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D%26S%26s%5C%5CS%26SS%26Ss%5C%5Cs%26Ss%26ss%5Cend%7Barray%7D%5Cright%5D)
Taking into account that the condition of the first kid does not imply the condition for the second, it should be analyzed as 2 independent events.
1. First kid has 1/4 of probability have the dissease as shown in punnet square
2. For a second birth, child has the 25% chance to have the disease
The probability that both events to happen is the product of each event probabilty:
p = 1/4 * 1/4 = 1/16 or 6,25%
Muscle cramps are caused when the muscle takes longer than normal to relax after a contraction. During contraction, the myosin heads attach on their binding sites on the actin filament and pulls on the filament hence shortening the sarcomeres. For the myosin head to release its binding site on the actin filament, ATP attaches to an active site on the myosin and is hydrolyzed to ADP and Pi. This causes relaxation after a contraction cycle. Cramps, therefore, may be due to depletion of ATP molecule in the muscles cells.
Another reason for cramps may be a high amount of calcium in the muscles that bind to troponin on the actin filaments. This exposes the myosin binding sites longer hence promotes the formation of cross-bridge even when the contraction of the muscle is not intended anymore.
Answer:
Prudence is older.
Explanation:
Prudence is older.
Charity's biological clock runs slower when she is at the edge of the rotating kingdom.
So on returning, Prudence at the center of the clock, would age faster than Charity who just come from the edge of the rotating kingdom
The increased loss of body heat.<span>
</span>
