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Day blindness

Day blindness --> haemralopia

(Science: ophthalmology) day blindness, defective vision in a bright light.

Origin: gr. Hemera = day, alaos = blind


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Mendel crossing with colour blindness (Probability)

... Male: 8324 not colour-blind, 725 colour-blind. Female: ? not colour-blind, ? colour-blind. Determine the number of colour-blind females if colour-blindness is caused by a monogene recessive X-chromosomal gene." My work so far: Males from the parent generation can have the X^AY (not colour-blind) ...

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by tomkoolen
Thu Jun 13, 2013 10:56 pm
 
Forum: Genetics
Topic: Mendel crossing with colour blindness (Probability)
Replies: 0
Views: 948

Help??? Genetics problem cannot figure it out?

Genes for color blindness and hemophilia are linked on the X-chromosome in humans with a recombination frequency of 30%. A woman whose father was a color blind hemophiliac and mother was normal with no history of color blindness and ...

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by adamk92
Sun Feb 17, 2013 10:29 pm
 
Forum: Genetics
Topic: Help??? Genetics problem cannot figure it out?
Replies: 2
Views: 2553

Females heterozygous for X linked diseases

... ~1/2 of her cells in retina would have a recessive allele and the other half would have the dominant allele?Or 1/2 is not enough to cause color blindness?And I'd like to know if it's true with other X linked diseases.

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by kysa
Fri Jan 04, 2013 5:04 pm
 
Forum: Genetics
Topic: Females heterozygous for X linked diseases
Replies: 1
Views: 1399

Method preventing illnesses in the progeny

... distinctly realize similar to researchers in the field of genetics an outstanding role of surgeons in reproduction of cardio-defects, a harelip, blindness, absence in the newborn organism from intestines of the external aperture and so it is infinite. In the field of experimental oncology it ...

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by valentindolzhenko
Sun Jan 08, 2012 4:26 pm
 
Forum: Physiology
Topic: Method preventing illnesses in the progeny
Replies: 3
Views: 8846

Re: Theories - Origin of Life

... in the cave environment (Culver 1982; Poulson 1963;Poulson and White 1969). As implied in the Darwin quote, however, the actual benefits of blindness have been difficult to understand. This hypothesis is the one favoured by Jeffrery along with others, and is a Darwinian explanation. Jeffery ...

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by scottie
Sun Dec 25, 2011 1:01 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 933631
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