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Eyes

The eyes are organs. They detect light, regulate the light through a diaphragm, focuses it through adjustable lenses and converts them into electo-chemical impulses in our neurons by photoreceptor cells called rods and cones. The image is converted into a set of electrical signals that are transmitted to the brain via neural pathways that connect the eye to the optic nerve and visual cortex of the brain. In short, eyes are very complex optical systems that convert light to distinguish objects and movement around us.

11,082 Questions

What kind of non Mendelian trait is color blindness?

Color blindness is an example of an X-linked recessive trait, which is a type of non-Mendelian inheritance. This means that the gene responsible for color blindness is located on the X chromosome, and the trait is more commonly expressed in males than females.

If you look at the sun too long will it ruin your eyes?

Yes, looking at the sun for too long can cause permanent damage to your eyes, including vision loss. The intense light and radiation from the sun can burn the retina, leading to solar retinopathy. It's important to protect your eyes by using proper eye protection when viewing the sun.

The pupils of a goat's eyes are square?

Yes, and only a few species have rectangular eyes. Sheep, Goats, Octopuses and Toads have these rectangular shaped pupils. Typically classified as prey, these animals need to have a defense both day and night. But they don't have vertical slits due to their need to survey their surroundings more accurately. The narrower the pupil in relation to the horizon, the greater the accuracy of depth perception is in the peripheral vision of the animal. The perception of depth must be considered with these animals who spend their time evading predators in a rugged terrain.

From The Evolution of The Rectangular Eye

http://www.science20.com/variety_tap/evolution_rectangular_eye

Can a baby have blue eyes if both parents have brown eyes and grandparents on one side have blue and brown and on the other side have green and brown?

Yes, it is possible for a baby to have blue eyes in this scenario due to the presence of blue eye genes in the grandparents. Eye color is a complex trait that can be influenced by multiple genes, so even if both parents have brown eyes, they can still carry the genes for blue eyes that could be passed on to their child.

Why cant our eyes look in two different directions?

Our eyes are physically limited in their ability to move independently because they are connected to the same control center in the brain. This coordination ensures that both eyes focus on the same object, providing depth perception and binocular vision. Trying to look in two different directions simultaneously would result in double vision and confusion.

How mannt eyes do a cat have?

Not really, but there have been legends about evil witches who have the power to turn into cats when put in cat eyes instead of human eyes. You could imagine that, though. Or buy little marbles that look like cat eyes and I guess just hold em' up to your eyes! :)

Witches don't do that. Just so you know. And you can't, but you could also like paint it around your eyes.

Do Arabian halter horses get their eyes burned to make their eye look bigger?

yes it is very crul to do aswell

I'm not sure where you got your information. I suppose there could be some "burning" done by some idiot somewhere, but I doubt there are very many judges that would place a horse with scar tissue on there eyes!

I have Arabians and have been showing in Halter, the special grooming along with the breeds naturally larger eyes, creates the allusion of huge eyes. The orbits of the eyes are clipped with a size 30 or 40 blade, then using shaving cream and a regular razor is CAREFULLY used to shave the hair off the area above the eye. The shaving cream is them washed off. Once dry, the face is made shiny by applying special oil to accentuate the beautiful chiseled heads of the Arabian Horse.

My horses enjoy the attention and grooming required for show. I assure you I have never heard of our beloved breed having there eyes "burned". Hope this helps.

What is the average diameter of a newborn human's eyeball?

Size of the eye doesn't change with age. The average size of a human eyeball is 2.4 cm.

What blue or brown eyes an example of?

An example of blue eyes would be actress Scarlett Johansson, while an example of brown eyes would be actor Idris Elba.

How do you show a punnett square of a woman who is color blind and a man who has normal vision?

Colorblindness is a sex-linked trait carried on the X chromosome. Males have an X and a Y chromosome (XY) and females have two X chromosomes (XX). Normal vision is dominant over colorblindness.

This means that the man must have an allele for normal vision on his only X chromosome. This also means that the woman must have two colorblind alleles on both of her X chromosomes.

If we use a capital 'B' to represent normal vision and a lowercase 'b' to represent colorblindness, the genotype of the male would be XBY, and the genotype of the female would be XbXb.

Now that we know the genotypes, setting up the Punnett square should be easy. Here is a direct image link to the Punnett square: http://i.imgur.com/gDfUv.png

This Punnett square tells us that there is a 50% chance of having a female that has normal vision and a 50% chance of having a colorblind male.

What do you do if your hamsters eyes are stuck together?

It depends. If there is pus coming from the eye it's usually an infection. If they're just stuck closed than just get a tiny drop of warm water on your finger and rub it on his eye, it should open.

Can baby have blue eyes if mother is half hispanic half white and father is full white with blue eyes?

I'm 100% Chinese (traced back to 15th century), my husband is 100% Caucasian (traced back to Scotland, England, Wales and Ireland). Our daughter was born with blue-gray eyes- and they still haven't changed one bit. She is now 4 months old... don't know if they will change, but for now, they haven't!

Is it possible to have a red haired baby with bule eyes if the parents both have brown hair and brown eyes?

In short from the info given, it could be possible. I wont go into the genetics of it and the probability of it. However if there was more info about the parents of each parent, then you could get an exact yes or no.

How big are sharks eyes?

Sharks have varying eye sizes depending on the species, but on average, their eyes are usually around 1-2 inches in diameter. Some species like the great white shark have larger eyes, while others like the cookiecutter shark have relatively smaller eyes. Generally, sharks' eyes are adapted for low light and murky water conditions.

What is a field of vision?

Field of vision refers to the total area in which an individual can see while their eyes are fixed straight ahead. It encompasses both central vision (focused vision) and peripheral vision (side vision). A larger field of vision allows for a wider range of visual information to be perceived.

What color eyes and hair will baby have if mother has red hair and green eyes and father has brown hair and green eyes?

The baby could have green eyes like both parents, and may have red hair like the mother or brown hair like the father. The combination of genes from both parents would determine the baby's specific eye and hair color.

Is hydropic degeneration reversible?

Hydropic degeneration is reversible if the underlying cause is identified and treated promptly. This condition is characterized by cellular swelling due to water accumulation, and resolving the trigger can help cells return to normal function. However, if left untreated, hydropic degeneration can progress to irreversible cell damage.

Can a blue eyes half blooded kiwi half blooded Irish and a brown eyes full blooded filipina can have a blue eyes baby?

It is unlikely for a baby to have blue eyes if neither parent has blue eyes, as blue eye color is a recessive trait. Eye color is a complex genetic trait influenced by multiple genes. The chances of a blue-eyed baby would be higher if one parent carries the blue eye color gene.

What happens when you poke a cow in the eye?

Poking a cow in the eye can be painful and cause the cow distress. They may react by moving away or even by trying to defend themselves. It is important to treat animals with respect and avoid causing them harm or discomfort.

Can you inherit blue eyes if parents do not have blue eyes?

Yes. Genetics work in such a way that even a recessive trait (in this case, blue colored eyes) can always show up in successive generations. In other words, it is possible your children may not have the same eye color as you, but then your grandchildren, or great grandchildren, or great great grandchildren, etc. could have the same eye color as you.

Can snakes have more then two eyes?

It is possible, but extremely rare. If a snake has two heads, that means four eyes instead of two. I don't know if a snake can have more than two eyes on one head, but yes, having more than two eyes is possible for a snake.

Do pill bugs have ears?

Pill bugs do not have ears in the traditional sense. They lack ears with eardrums but they can sense vibrations through their antennae and body hairs, allowing them to detect sound waves to some extent.

Are brown eyes or blue eyes the most prevalent amongs Caucasians?

Brown eyes are more prevalent among Caucasians than blue eyes. Across all ethnicities, brown eyes are the most common eye color.