Answer:
The chance of a normal couple having a child with down syndrome is 1 to 600 births.
Explanation:
Down syndrome is a genetic flaw that occurs when the fetus is being formed.
A human cell considered normal has 46 chromosomes, divided into 23 pairs. For some unknown reason, an error may occur at the beginning of embryonic development and an extra chromosome is created, which binds to par 21. The result is cells with 47 chromosomes. This causes the said syndrome.
It is important to know that this failure happens at random. It is nobody's responsibility. It has not been proven to date that lifestyle, actions during pregnancy, smoking, drinking, medicines, environmental factors or kinship between the couple can influence this occurrence. She is not contagious either. The likelihood of a normal couple having a child with the syndrome is approximately 1 to 600 births.
The energy of the ecosystem can be best described as option C. The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.
Base on studies and researches and the DRI guidelines in
which had provided factual and evidence, the desirable intake of dietary fiber
among women who is under at the age of fifty years old is that they should have
twenty five grams of fiber daily.
- The
storm must be developing over warm water. The water must be at least 80
degrees Fahrenheit. The warm water provides the energy for increased
evaporation of water from the ocean surface.
- The
warm water must be at least 200 feet deep
<span>- There
should be very little wind shear in the area. Wind shear occurs when there is a
difference in wind speed and direction over a short distance. Strong wind shear
can stop the formation of hurricane eye walls. </span>
This works because the white pain acts as a barrier, therefor the sunlight a bounces off the glass instead of just going through.
