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1. Hypothalamus is thermoregulatory centre in brain. This detects increase in temperature (above 37 degrees Celsius) and is activated.2. Hypothalamus causes vasodilation of skin capillaries, which ...
A gene is a length of DNA that codes for a particular trait. ( Think of- jeans - they are long items (length) of clothing, what they're made out of determines what they are. This is a key concept of g...
Alleles are different versions of the same gene, which give different characteristics (or phenotypes) when expressed. Each gene has a pair of two alleles, and these pairs can be h...
Screening embryos for conditions carries the risks of possible harm to the mother and harm to the embryo, including possible loss of the embryo. The result of the screening could also carry ethical implic...
The heart is made up of four chambers. The ones at the bottom are called right and left ventricles and those at the top are the left and right atria. The left and right sides are divided by the septum, a ...
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