<span>Positive Homans'
medical Definition of Homans' sign. : pain in the calf of the leg upon dorsiflexion of the foot with the leg extended that is diagnostic of thrombosis in the deep veins of the area.</span>
Answer:
The correct option is <em>C. Non-genetic factors can influence expression.</em>
Explanation:
Non- genetic factors can be described as factors other than genetic makeup. These factors include environmental factors and factors arising from the lifestyle of an organism.
Certain studies have shown that both the genetic as well as the non- genetic factors play a role in the development of certain characteristics.
In the above-mentioned scenario, both the monozygotic twins have diabetes but one of them is affected 70% of the time due to his lifestyle. The person might be consuming more sugars and alcohol.