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Colour vision

Colour vision defects

mild to severe impairment in the ability to discriminate or differentiate hues. This disorder may be acquired as a result of diseases of the cones or x chromosome-linked where there is an abnormality but not a complete absence of one of the cone pigments.


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Green mammals

... which is in fact brown. Also, consider that most mammals have poor colour vision, in which green is usually abandoned. The only predators that may pose any threat to ...

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by Squirrell
Tue Feb 21, 2012 9:39 pm
 
Forum: Zoology Discussion
Topic: Green mammals
Replies: 11
Views: 14764

UNILATERAL red-green color blindness

In 303 mothers of colour-blind sons, both eyes were tested with pseudoisochromatic plates and with the anomaloscope. ... were affected to a very similar, moderate degree. Monocular disturbances of colour vision were not observed in the entire series. Our data suggest that (1) in most (if not ...

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by Blacky11
Mon Aug 01, 2011 10:03 am
 
Forum: Genetics
Topic: UNILATERAL red-green color blindness
Replies: 7
Views: 12626

Re: UNILATERAL red-green color blindness

Unilateral colour vision defects are most commonly associated with retinal pathology or compressive lesions involving the optic ...

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by Curio
Wed Mar 03, 2010 2:37 pm
 
Forum: Genetics
Topic: UNILATERAL red-green color blindness
Replies: 7
Views: 12626

Question

Colour Blindness is an X-linked recessive trait. If a female has normal vision, and to have colour-bind children, she would either have to be a carrier of the recessive gene, and/or be ...

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by 2Loula
Tue Mar 13, 2007 1:10 pm
 
Forum: Genetics
Topic: Question
Replies: 8
Views: 3665

Evolution - Natural Selection FLAWED?

... the environment, such as hunger and disease. Darwin adapted Malthus's vision of a fierce struggle for survival among human beings to nature at ... are often surprisingly diverse. In the house mouse, nearly every coat-colour gene has some effect on body size. Out of seventeen x-ray induced ...

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by Thermopylae
Sun Feb 18, 2007 3:52 pm
 
Forum: Evolution
Topic: Evolution - Natural Selection FLAWED?
Replies: 9
Views: 22507
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