If a child being fat is his aquired trait then why is that in some cases a person does not become fat how much ever he eats whereas another one may remain fat though he does not eat any such kind. Isn't this becauce of inheritance?

It is true that some people remain thin how much ever they eat. This may be due to the one of the following reasons:

• Appetite has a genetic basis
• Age, weight and diet of the mother during pregnancy influences the child's weight
• Eating habits influence the weight. Thin people avoid excess calories instinctively
• Basal metabolic rate plays a strong role in energy expenditure
• The feeling of hunger is related to the number of fat cells
• The number of fat cells can grow but never diminish