Diabetes mellitus type 2 can be common within a family, and yet no single gene has been identified as causing the problem, although diet and exercise habits influence whether the disease develops. this disease is probably controlled by:
a. an autosomal recessive mutation.
b. a sex linked mutation.
c. an autosomal recessive mutation.
d. multifactorial inheritance.

D. multifactorial inheritance

Explanation:

A trait that is regulated by more than one genes and one or more environmental factors and their interactions is said to exhibit multifactorial inheritance. Type 2 diabetes mellitus is also called non-insulin dependent diabetes since blood glucose levels can be regulated by adopting a healthy lifestyle. Obesity, stagnant lifestyle, etc. predispose the risk of type 2 diabetes mellitus among the individuals. The absence of one specific gene as a regulator of the disease and effects of the environment makes type-2 diabetes to exhibit multifactorial inheritance.

Centre of Gravity

The centre of gravity (COG) of the human body is a hypothetical point around which the force of gravity appears to act. It is point at which the combined mass of the body appears to be concentrated[1]. Because it is a hypothetical point, the COG need not lie within the physical bounds of an object or person. One subjective way (there are objective measures) to approximate the COG of an object is to visualise it balancing on one finger.

Centre of Gravity in the Human Body

In the anatomical position, the COG lies approximately anterior to the second sacral vertebra. However, since human beings do not remain fixed in the anatomical position, the precise location of the COG changes constantly with every new position of the body and limbs. The bodily proportions of the individual will also affect the location of the COG.