Birth defects or genetic disorders can also be caused by a problem with the number or structure of chromosomes. Usually this results in multiple body systems being affected. Approximately 1% of all babies will be born with chromosomal abnormality, which can cause physical problems and mental retardation. 2  More than 20% of infant deaths are caused by birth defects or genetic conditions (e.g. congenital heart defects, abnormalities of the nervous system, or chromosomal abnormalities).
We tend to put the fridge on at least 24 hours before departure. How quickly it gets cool can be influenced by the ambient temperature. Although it should cool down overnight. If you don't think its getting cold enough on mains it might be worth trying to cool it down initially on gas.
Place the thermometer in a glass of water, then position the glass in the center of your fridge. Check the temperature after five to eight hours. If it is higher than 40 degrees, adjust the baffle knob to allow more cold air into your fridge and reduce the temperature. If it is lower than 38 degrees, turn the baffle knob the opposite way to restrict the flow of cold air from the freezer to the fridge.