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Oil droplets are found in the eyes of some … Oil droplets are found in the eyes of some animals, being located in the photoreceptor cells. They are especially common in the eyes of diurnal (active during the day) reptiles (e.g. lizards, turtles) and birds (see bird vision), though are present in other taxa such as lungfish. They are found in cone cells far more often than in rods, suggesting a role in colour vision. Occurrence in rod cells may imply that they have been modified from a cone cell ancestor. They occasionally occur in double cones/double rods. Some oil droplets are coloured, while others appear colourless. They are located in the cone inner segment, where they intercept and filter light before it can pass through to the cone outer segment where the opsins are, the molecules that sense light. The adaptive advantage of oil droplets is not firmly established. Coloured oil droplets have a cost in that they reduce the amount of light available to the visual system. They also reduce the overlap in spectral sensitivity between different types of cone (e.g. short wavelength sensitive, medium wavelength sensitive etc.). This can be a benefit because it increases the number of colours that can be discriminated, and calculations by Vorobyev (2003) support the hypothesis that this is of net benefit.he hypothesis that this is of net benefit.
, Tetesan minyak ditemukan di mata beberapa … Tetesan minyak ditemukan di mata beberapa hewan, yang terletak di sel-sel . Umumnya terdapat di mata binatang (aktif di siang hari), reptil (kadal, kura-kura) dan burung (lihat penglihatan burung).Tetesan minyak lebih banyak ditemukan di sel kerucut daripada sel batang, menunjukkan perannya dalam . Dalam hal tetesan minyak ditemukan di sel batang, dapat disimpulkan bahwa sel batang tersebut merupakan evolusi dari sel kerucut.Kadang tetesan minyak juga ditemukan dalam sel kerucut ganda atau sel batang ganda.Beberapa tetesan minyak memiliki warna, sementara ada juga yang tidak berwarna. Terletak di bagian dalam sel kerucut, dimana tetesan minyak ini akan menyaring cahaya yang masuk sebelum diteruskan ke bagian luar sel kerucut tempat terdapatnya pigmen visual. Tetesan minyak berfungsi mengurangi jumlah cahaya yang masuk ke . Juga mengurangi overlap antara sensitivitas beberapa jenis sel kerucut (seperti panjang gelombang). Hal ini berguna untuk meningkatkan jumlah warna yang bisa dibedakan.ngkatkan jumlah warna yang bisa dibedakan.
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| rdfs:comment |
Tetesan minyak ditemukan di mata beberapa … Tetesan minyak ditemukan di mata beberapa hewan, yang terletak di sel-sel . Umumnya terdapat di mata binatang (aktif di siang hari), reptil (kadal, kura-kura) dan burung (lihat penglihatan burung).Tetesan minyak lebih banyak ditemukan di sel kerucut daripada sel batang, menunjukkan perannya dalam . Dalam hal tetesan minyak ditemukan di sel batang, dapat disimpulkan bahwa sel batang tersebut merupakan evolusi dari sel kerucut.Kadang tetesan minyak juga ditemukan dalam sel kerucut ganda atau sel batang ganda.Beberapa tetesan minyak memiliki warna, sementara ada juga yang tidak berwarna. Terletak di bagian dalam sel kerucut, dimana tetesan minyak ini akan menyaring cahaya yang masuk sebelum diteruskan ke bagian luar sel kerucut tempat terdapatnya pigmen visual. kerucut tempat terdapatnya pigmen visual.
, Oil droplets are found in the eyes of some … Oil droplets are found in the eyes of some animals, being located in the photoreceptor cells. They are especially common in the eyes of diurnal (active during the day) reptiles (e.g. lizards, turtles) and birds (see bird vision), though are present in other taxa such as lungfish. They are found in cone cells far more often than in rods, suggesting a role in colour vision. Occurrence in rod cells may imply that they have been modified from a cone cell ancestor. They occasionally occur in double cones/double rods. Some oil droplets are coloured, while others appear colourless. They are located in the cone inner segment, where they intercept and filter light before it can pass through to the cone outer segment where the opsins are, the molecules that sense light.psins are, the molecules that sense light.
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| rdfs:label |
Tetesan minyak (anatomi hewan)
, Oil droplet
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