Eye
(Science: zoology) a brood; as, an eye of pheasants.
Origin: Prob. Fr. Nye, an eye being for a nye. See Nye.
Eye
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compound eye
one made of numerous units, called ommatidia, such as those found in certain arthropods
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
FIG. 891- The right eye in sagittal section, showing the fascia bulbi (semidiagrammatic). (Testut.) (See enlarged image) ...
The compound eye is excellent at detecting motion. As an object moves across the visual field, ommatidia are progressively turned on and off. Because of the resulting "flicker effect", insects respond far better to moving objects than stationary ones.
eye. A collection of several buds on the surface of a potato tuber, one of which will sprout and form a new stem when conditions are favorable.
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Index ...
Eye
In the eye, two types of photoreceptor cells are clustered on the retina, or back portion of the eye. These receptors, rods and cones, apparently evolved from hair cells. Rods detect differences in light intensity; cones detect color.
The Eye
Table 16-8-1: The structure and function of the mammalian eye
Conjunctiva ...
(eye-sog-uh-mee)
A condition in which male and female gametes are morphologically indistinguishable.
isolating mechanisms ...
In the eye, a nutritive, watery fluid between the cornea and the lens that focuses incoming light rays and maintains the shape of the eyeball.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
parietal eye See median eye.
Parotid The parotid gland at the base of the ear.
pars prostatica Dilation of the ejaculatory duct of a flatworm, surrounded by unicellular prostate cells.
The human eye is an amazing and powerful organ. As you read the words on this screen, your eyes see the shapes of the letters, and transmit the information back to your brain.
compound eye -- Found in many but not all arthropods, a compound eye is composed of a large number of small, closely packed simple eyes (ommatidia), each with its own lens and nerve receptors.
If the gene for eye color is on the X chromosome, the red eyed male in the second cross will pass his red eyed X to only his daughters, who in turn received only a recessive white-carrying X from their mother.
The alleles for eye color and for body color are on the X chromosome of Drosophila, but not on the Y. Red eye color (w+) is dominant to white eye color (w), and tan body color (y+) is dominant to yellow body color (y).
Adaptation (eye) In ocular physiology, adaptation is the ability of the eye to adjust to various levels of darkness and light
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Using Astronomy to Diagnose Eye Diseases and Correct Human Vision: Scot Olivier (Lawrence Livermore National Laboratory, LLNL).
at a locus for eye colour the allele might result in blue or brown eyes).
Amino acid Any of a class of 20 molecules that are combined to form proteins in living things.
The most basic image sensor, the eye, was the only means humans had of visually observing the world around them for thousands of years.
The discovery of tumor suppressor genes was initially provoked by studying this rare eye tumor, retinal blastoma, and the genetics with which it was inherited.
Let's presume that we're starting with an organism that already has an eye of some sort. The first step towards a color vision system is the need for at least two visual pigments.
eye color, height, blood type) of an organism. Genotype is the largest influencing factor in the development of phenotype. But even for two organisms with identical genotypes (i.e. identical twins), they will not have identical phenotypes.
For example, suppose that 65% of the eye-color genes in a population were for individuals with blue eyes and 35% of the genes were for brown eyes.
Eye and hair color and height are examples of genetic traits which involve many pairs of genes. These traits are called multifactorial to describe the fact that several gene pairs are involved along with environmental influences in their expression.
A single allele for each gene locus is inherited separately from each parent (e.g., at a locus for eye colour the allele might result in blue or brown eyes).
Any organism too small to be seen by the naked eye, e.g. bacteria, viruses, protozoa, some fungi, and some algae.
Interphase, which appears to the eye to be a resting stage between cell divisions, is actually a period of diverse activities. Those interphase activities are indispensible in making the next mitosis possible.
A phenotype is an individual's observable traits, such as height, eye color, and blood type. The genetic contribution to the phenotype is called the genotype.
Alternative form of a genetic locus; a single allele for each locus is inherited from each parent (e.g., at a locus for eye color the allele might result in blue or brown eyes).
See also: locus, gene expression
Allogeneic ...
Alleles: Alternative forms of a genetic locus; a single allele for each locus is inherited separately from each parent (e.g., at a locus for eye color the allele might result in blue or brown eyes).
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allele - one variant of a particular gene; for example, there are blue and brown alleles of the eye-color gene.
anaphase - phase of mitosis where sister chromatids separate and daughter chromosomes migrate to opposite poles of the cell.
Cornea the clear covering over the front of the eye
(corne = horn‚ horny)
Coronary Artery the artery supplying blood to the heart muscle
(corona = crown) ...
Macrophyte. An individual alga large enough to be seen easily with the unaided eye
Macroplankton. Planktonic organisms that are 200-2,000 micrometers in size.
They have come up with the same solution to a problem but from different directions. It's not a conscious choice to develop an eye or a way of hearing. Outside natural factors create a situation where that skill is a benefit.
Organ A group of tissues that perform a particular job. Animals have more than a dozen organs, including the heart, brain, eye, liver, and lung.
 See also: Organ, Trans, Human, Cells, Cell
  
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