Progressive Muscle Relaxation Technique - The term was coined by <span>Edmund
Jacobson. In this relaxation technique, Jacobson suggests tensing and relaxing of specific muscles of the body one after another until all the muscle groups in the body are completely relaxed. </span>
To find the probability we can draw a 4-square Punnett square using the parents' alleles for the gene. If you want a more detailed explanation I would be glad to help :)