This question has been controversial and there is no definite answer. From an evolutionary perspective, birds evolved from reptiles, so the original "eggs" were probably laid by an ancestor that was very similar to, but not identical to, chickens. So it can be said that the first egg that hatched into a chicken was laid by an ancestor that was slightly different from the chicken.
However, from a biological and genetic perspective, we usually think of the chicken before the egg, because random mutations will occur during DNA replication, leading to the gradual formation of new species, and these mutations may at some stage allow An organism is recognized as a new species (e.g. chicken). Therefore, from this perspective, we can think that the chicken comes first and then the egg.
animal tags：
you may also like
When you think of animals with humps, camels are likely the first that come to mind. These iconic creatures are symbols of resilience and adaptability in some of the harshest climates on Earth. But camels aren’t the only animals with hump-like features. Let’s explore these fascinating adaptations,...
Fish are cold-blooded animals, also known as ectothermic animals. This means that their body temperature is not internally regulated and instead depends on the temperature of their surrounding environment. Let’s dive deeper into what this means, why it's important, and how it affects the lives...
The following is a typical formula ingredient list for common pig premixes. The specific formula may vary depending on different manufacturers and products. Please note that in actual use, it should be adjusted according to the age, growth stage and nutritional needs of the pig. Typ...
In mainland China, the word "kestrel" usually refers to the kestrel (scientific name: falco tinnunculus), which is a first-level protected animal in China. First-level protected animals refer to rare and endangered wild animals that are expressly protected by national and local gove...
Early summer is the beginning of the bird breeding season, when many birds return to the Northern Hemisphere to breed. Here are some common early summer birds: 1. Swallows: Swallows usually return to the northern hemisphere in spring to breed. In early summer, they have officially se...
Pink plumage is a very beautiful appearance found in many birds. Here are some common pink birds:1. Kestrel: The kestrel is a widespread game bird that is mostly gray but has dark red feathers covering its face, throat and chest.2. Rose Macaw: This is a very beautiful medium-sized parrot, mainly fou...
The curly-tailed lizard is a common pet lizard. Here are some tips for caring for the curly-tailed lizard: 1. Habitat: It is very important to provide a suitable habitat for the Curly-tailed Sand Lizard. They need a spacious glass or plastic fish tank as a habitat, ensuri...
When dogs become lost and lose their sense of direction from home, they may become lost and leave their original neighborhood. However, some dogs will still linger around after being lost, especially if they are familiar with the area or have a food source. Here are some...
Email: jsset#163.com (change # to @) Please indicate your purpose of visit! Guangdong ICP No. 2022053326 XML| map| Chinese
