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Dictionary » D » Day blindness

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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Natural selection is proven wrong

... less likely it is to affect an individual. There are some exceptions to this for well-documented reasons, but a clear trend can be seen: colour blindness is relatively common, because it is almost harmless; Duchenne muscular dystrophy is a rare disease - even though it is common among lethal ...

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by biohazard
Thu Apr 23, 2009 10:53 am
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16564

Re: Natural selection is proven wrong

... Palmitoyltransferase Deficiency * Cerebral Palsy * Charcot-Marie-Tooth Disease * Cleft Lip/Cleft Palate * Coffin Lowry Syndrome * Coloboma * Color Blindness * Congenital Heart Defects * Congenital Hip Dysplasia (Dislocation) * Connective Tissue Disorders * Cooley's Anemia * Corneal Dystrophy * ...

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by gamila
Thu Apr 23, 2009 4:16 am
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16564

Mendelian Genetic Problems

... pease (s). What are the phenotypic ratios and genotypic ratios for a cross between TTSS and ttss? between TtSs and TtSs? #5. Red-green color-blindness is inherited as a sex-linked recessive. If a color-blind woman mates with a man who has normal vision, what would be the expected phenotypes ...

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by DRJ
Sun Jan 25, 2009 4:41 am
Forum: Genetics
Topic: Mendelian Genetic Problems
Replies: 2
Views: 917


... phenotype is confined to one sex b) involves only the Y chromosome c) implies that the gene is on one of the sex chromosomes d) means that colour blindness occurs only in women e) is another term for sex limited d 2) Loci A and B are unlinked. Two double heterozygotes are crossed. The proportion ...

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by chousta
Sat Aug 23, 2008 7:14 am
Forum: Genetics
Topic: Help
Replies: 1
Views: 678

Re: What is this insect I found?

... they can release a stream of toxin from the rostrum, maybe reaching about one foot in distance and it can cause skin irritation and temporary blindness if introduced into the eyes. :shock:

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by Ken Ramos
Wed Jun 25, 2008 2:10 am
Forum: Zoology Discussion
Topic: What is this insect I found?
Replies: 4
Views: 1675
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