mom there are gram-positives under my bed
mom there are gram-positives under my bed
A White Blood Cell chasing and consuming a Bacterial Organism through a process called Phagocytosis.
Love this!! Run leukocyte, run!
Check out WormBase to explore this worm’s biology.
White Blue Peacock
This bird is a crossbreed between blue and white peacocks. The result is one spectacular creature.
“A crossbreed between the blue and white peacock”
Man why don’t you shut the fuck up if you don’t know anything about genetics?!
I’ve said this before, they’re throwing paint on everything these days. It’s very incredible that someone found this color gene in birds.
But it IS a crossbreed. … i very complicated crossbreed, but a cross breed just the same.
Can it be called a piebald?
i guess you could, but technically no. Pied is black and white and would insinuated the same(or similar) pattern every time like pinto patterns. But since white-blue peacock breeds are random in their color splash it cant truly be classified…
The genetics behind this probably isn’t that complicated. In birds the male sex chromosomes are homozygous (ZZ) while the females are heterozygous (ZW). The gene for coloration is most likely on the Sex chromosomes so when you have two normal Zs together you get the bright male coloration. When you have a Z and a W you get the dull female coloration. What happened here is a heterozygous cross in the Coloration genes. There is a special regulation system in homozygous sex chromosome animals that expresses only one of the two sex chromosome’s genes in each cell, the expression is random. That is probably the reason for the random coloration, half the cells express the wild type the other half express the mutant type. This sort of thing can happen in female mammals and is the reason why almost all calico cats are female. (This is a simplified explanation of animal coloration genetics there’s much more regulation involved)
Well you are partly correct. But the fact you had to say “this is a simplified explanation” just means its complicated… ;o
you see color IS a sex linked trait but it doesnt just stop right there.
The colors in the feathers of a bird are determined two factors: pigment and structure.
Pigment colorization in birds comes from three different groups: melanins which abide by the laws of penetrance like how you can get cream variants from browns, porphyrines which is co dominant in nature and carotenoids which are acquired only by eating plants or by eating something that ate a plant like how flamingos are pink.
BUT you also have to factor in structure!! Each feather consists of thousands of flat branches, each with bowl-shaped indentations. that acts like a prism, splitting light which is how some green in some parrots is a result of yellow pigments over blue-reflecting feathers. It’s the same principle for butterflies and humming birds.
You see… complicated :D
A new technique that turns pig stem cells into strips of meat could offer a green alternative to the slaughterhouse and help end hunger.
Muslim Community, is this considered halal? Stem cells are basically still “pure cells” after all.
To paraphrase a fellow scientist “we have to address what type of stem cells, as there is a variety, and then, what’s defined as “haram” there are various kinds of stem cells: embryonic, fetal, adult, amniotic, cord blood and induced pluripotent cells. what is deemed ‘impermissible’ or “haram” by Christianity and Islam alike is the use of embryonic stem cells; that is, destroying a fertilized egg to utilize it’s cell population for research purposes.” BUT if we are speaking just about pork, swine is swine regardless of where it comes from so it is haram.
BUT THE QUESTIONS I HAVE IS HOW DO THE VEGANS FEEL ABOUT CLONED MEAT???
The head of an insect from the Entiminae family, which contains broad-nosed weevils that can be a pest with economic importance.
Image by Mr. Jose R. Almodovar, University of Puerto Rico Mayagüez.
Bioluminescent Phytoplankton in the Maldives
FUCK YES SCIENCE
Many men cringe at the idea of dating women who are more than a few inches taller than they are. Imagine, then, how a man would feel about dating someone 100 times his size.
For the male pillow octopus, being dwarfed by your mate is simply a way of life. Full-grown male pillow octopuses are only a couple of centimeters long and weigh less than a gram. Meanwhile, the females can reach more than six feet (2 meters) and weigh 100 pounds (45.4 kilograms). That means a female is 40,000 times heavier than a male [source: Pickrell].
In human terms, that would be like a man asking out a woman four times the size of the Statue of Liberty or a woman flirtatiously giving her phone number to a man the size of a beetle. Luckily for the male pillow octopus, however, mating isn’t a full contact sport. Males of this species have a modified arm that contains long rows of sperm. He simply tears off this arm and politely hands it to his mammoth female mate, who then saves it for later use.
The pillow octopus is just one fascinating example of the octopus order (octopoda), which is as varied as the different plural forms of its name. Octopi, octopods, octopuses and other variations are all used by scientists. Ranging in size from the one-fourth gram male pillow octopus to the record 600 pound (272 kilograms) plus giant Pacific octopus, this most advanced of invertebrates has flabbergasted and amused researchers for years.
In this article, you’ll find out why new camera lenses are patterned after the octopus’s eye and how a Seattle octopus earned herself the name Lucretia McEvil. But first, let’s take a look at the octopus’s unique body style.
Human tongue surface, coloured scanning electron micrograph (SEM). The tongue is covered in many backward facing projections called filiform papillae, which sense pressure. The papillae have a scaly appearance because they are constantly shedding their top layer of skin.
Credit: SCIENCE PHOTO LIBRARY
Unidentified Lizard, Possible Newly Discovered Species?
An unusual reptile, resembling a cross between a lizard and a snake, seen inside a cage at Kaisone Temple in Phonmee village on the outskirts of Vientiane, Laos. The reptile (an unknown lizard species) measures 30cm in length, has short legs, a striped, scaled body like a snake and a thumbnail-sized head. The animal was found by a local farmer near his rice mill. A picture of the reptile has been sent to the Wildlife Conservation Society to determine its species.
(via: Guardian UK) (photo: STR/EPA)