Normal colour vision (trichromacy) refers to vision that uses all three types of light cones. People with defected trichromatic vision will be colour blind to some extent and these conditions are called anomalous trichromacy. Three types anomalous trichromacy ( one type of cone perceives light slightly) :
1. Protanomaly – phenotype: reduced sensitivity to red light
2. Deuteranomaly - phenotype: reduced sensitivity to green light
3. Tritanomaly – phenotype: reduced sensitivity to blue
People can also have color blindess as the result of mutation, when loss of function of one cone occurs. This condition is called dichromacy. If there is complete color blindness or monochromacy, the person can’t distinguish any color from grey.
Color blindness is an inherited genetic disorder resulted from mutations on the X chromosome.
Answer: Chromosome
The polynucleotide DNA strands are wrapped on circular proteins called histones which then are condensed into a structure called chromosome.
<span>A continuous, uncontrollable anxiety or worry that occurs almost on a daily basis during a period of six months and that is not due to any physical causes such as disease, drugs, or drinking too much coffee is called generalized anxiety disorder.
Drinking too much coffee can cause anxiety more worse and even it leads to anxiety attacks. caffeine is a psychoactive drug. There are some benefits of drinking coffee but drinking too much coffee has side effects.</span>
