As humans consistently chose the tamest red junglefowlsThe red junglefowl (Gallus gallus) is a tropical bird in the family Phasianidae. It ranges across much of Southeast Asia and parts of South Asia. It was formerly known as the Bankiva or Bankiva Fowl.https://en.wikipedia.org › wiki › Red_junglefowl
So proto-hen laid an egg, and proto-rooster fertilized it. But when the genes from ma and pa almost-chicken fused, they combined in a new way, creating a mutation that accidentally made the baby different from its parents.
They also found that the birds that eventually became the modern domestic chicken were originally a red jungle fowl subspecies called Gallus gallus spadiceus. The data also showed that after the birds were carried off to other parts of Asia, they were bred with other red jungle fowl and also other jungle fowl species.
The first chickens
The very first chicken in existence would have been the result of a genetic mutation (or mutations) taking place in a zygote produced by two almost-chickens (or proto-chickens). This means two proto-chickens mated, combining their DNA together to form the very first cell of the very first chicken.
Domestication of the chicken dates back to at least 2000 B.C. and their ancestry can be traced back to four species of wild jungle fowl from Southeast Asia.
Most scientists agree that the Southeast Asian Red Junglefowl (gallus gallus) is the primary wild ancestor of chickens.
The chicken versus egg question has come to be used as a metaphor for self-perpetuating cycles and the futility of trying to decide how the cycle began instead of dealing with the cycle in the present.
After all, understanding the question based strictly on Genesis, the chicken would come first.
It's pretty safe to say that the egg came first, because if there had been no egg, there would have been no chicken. Chickens are birds, and we know that birds evolved from reptiles, so we can say that the first bird hatched from an egg that was laid by a reptile that was very similar to, but not quite, a bird itself.
The closest living relatives of Tyrannosaurus rex are birds such as chickens and ostriches, according to research published today in Science (and promptly reported in the New York Times). Paleontologists used material discovered in a chance find in 2003 to pin down the link.
Chickens are native to the tropical jungles of Southeast Asia, but over the last approximately 8,000 years, chickens have been domesticated and spread around the globe to become one of the most valued domesticated animals. These fairly shy forest birds lack the ability for long-distance flying and are not migratory.
The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old.
Believe it or not, intense debate surrounds the question of where and when humans first domesticated the chicken, but a recent study suggests it happened in China around 10,000 years ago. It could be, though, that domestication happened in several places at around the same time.
To answer the question, chickens don't get pregnant. A hen will produce eggs, but it will only be fertilized if a rooster is present. The number of eggs produced is affected by things such breed, light, temperature and nutrition.
“Chickens are the closest living relative to Tyrannosaurus rex.” “Chickens are directly descended from T. rex.”
Putting more meat on the theory that dinosaurs' closest living relatives are modern-day birds, molecular analysis of a shred of 68-million-year-old Tyrannosaurus rex protein — along with that of 21 modern species — confirms that dinosaurs share common ancestry with chickens, ostriches, and to a lesser extent, ...
No, a chicken and a duck cannot mate. As you will soon find out, it is physically impossible for a rooster to impregnate a female duck. It is also unlikely a male duck can fertilize a hen. However, just because chickens and ducks cannot procreate, it does not mean it is safe to leave male ducks with your flock of hens.
Chicken and turkey hybrids
There have been attempted crosses between domestic turkeys (Meleagris gallapavo) and chickens. According to Gray, no hybrids hatched in twelve studies. Other reports found only a few fertile eggs were produced and very few resulted in advance embryos.
Pheasant/Chicken Hybrids
Different species of pheasants have long been known to mate, and there are even instances of pheasants and chickens reproducing. Below is a picture of two specimens of crosses between pheasants and domestic chickens (which are in the same family, Phasianidae).
They also found that the birds that eventually became the modern domestic chicken were originally a red jungle fowl subspecies called Gallus gallus spadiceus. The data also showed that after the birds were carried off to other parts of Asia, they were bred with other red jungle fowl and also other jungle fowl species.
Armed with knowledge of evolution, the answer is straightforward. Eggs came first. Next time you crack open an egg, think of its many unusual features, and the hundreds of millions of years of evolution that preceded its appearance. Dinosaurs, the animal group that includes birds and their ancestors, laid eggs.
Yes. It is a rare occurrence. When two chicks hatch from the same egg, the egg usually has two yolks. Usually, one embryo out competes the other and only one chick survives to hatch.
There is strong evidence that egg-laying is ancestral to live birth, meaning it came first. Many physiological changes were necessary for live birth to have evolved from egg-laying.
If the question refers to eggs in general, the egg came first. The first amniote egg—that is, a hard-shelled egg that could be laid on land, rather than remaining in water like the eggs of fish or amphibians—appeared around 312 million years ago.
The age-old riddle has finally been settled. Eggs are much older than chickens. Dinosaurs laid eggs, the fish that first crawled out of the sea laid eggs, and the weird articulated monsters that swam in the warm shallow seas of the Cambrian Period 500 million years ago also laid eggs.