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What year was the first dinosors born in?
Dinosaurs first appeared during the Triassic period, approximately 230 million years ago. This era marked the beginning of the Mesozoic Era, often referred to as the "Age of Dinosaurs." The earliest known dinosaurs include species such as Eoraptor and Herrerasaurus.
What is 100 million years old?
Fossils of dinosaurs are often around 100 million years old, dating back to the Late Cretaceous period. This era saw the dominance of dinosaurs on Earth, alongside the emergence of flowering plants. Additionally, certain geological formations and sedimentary rocks can also be around this age, providing insights into the planet's history during that time.
Why was 3 1 the ratio in Mendels F2 generation?
In Mendel's F2 generation, the 3:1 ratio observed for dominant to recessive traits arises from the segregation of alleles during gamete formation. When he crossed heterozygous parents (Tt), the resulting offspring can inherit combinations of alleles that produce three dominant phenotype offspring (TT or Tt) and one recessive phenotype offspring (tt). This reflects the principles of Mendelian inheritance, specifically the law of segregation, where each parent contributes one allele for a trait, leading to the 3:1 phenotypic ratio in the F2 generation.
How many crabs are born per year?
The number of crabs born each year varies significantly by species and environmental conditions. For instance, blue crabs can produce up to 2 million eggs per female during a single spawning season. Overall, estimates suggest billions of crabs are born annually across various species worldwide, but precise numbers can be difficult to ascertain due to factors like predation and habitat conditions.
How many times does a fish open and closes its mouth and operculum in 1 minute?
The frequency with which a fish opens and closes its mouth and operculum can vary significantly depending on the species, activity level, and environmental conditions. On average, a fish might open and close its mouth and operculum about 30 to 60 times per minute when at rest, but this rate can increase during feeding or in response to stress. Some species, especially those that are more active, may exhibit even higher rates.
Which organisms were dominant during the mesozoic era?
Dinosaurs
In which period were the dinosaurs dominant aka age of the dinosaurs?
They were dominant during the mesozoic era, which was made up of the Triassic, Jurassic, and Cretaceous periods.
What species existed during the Mesozoic?
Dinosaurs
Most mammals during the Mesozoic were?
During the Mesozoic Era, most mammals were small, nocturnal, and likely insectivorous. They were overshadowed by larger reptiles like dinosaurs and did not become the dominant group of animals until after the extinction of the dinosaurs at the end of the Mesozoic.
Dinosaurs and angiosperms were the most visibly dominant lineages during which geologic era?
I know that the angiosperms were most dominant during the cretaceous period but im not too sure about the dinosaurs dominant era. I would assume they were both dominant in the same era but I am not 100% sure.Read more: http://wiki.answers.com/Dinosaurs_and_angiosperms_were_dominant_lineages_during_with_geologic_era#ixzz1G5bqBpQR
How many dinosaurs were living during the mesozoic era?
100 types of dinosaurs lived during the mesozoic era.
Did dinosaurs live Cenozoic era?
No, dinosaurs existed during the Mesozoic era, which ended about 66 million years ago. The Cenozoic era began after the Mesozoic era and continues to the present day, during which mammals became the dominant land animals.
What kind of dinosaurs live in the mesozoic era?
The Mesozoic era is divided into three periods Triassic, Jurassic and Cretaceous. During the early Triassic, corals appeared. Seed plants dominated the land, in the northern hemisphere, conifers flourished. Glossopteris was the dominant southern hemisphere tree during the Triassic period. Many new dinosaurs appeared during the Jurassic period. Giant plant eating dinosaurs dominated the Earth. carnivores such as Allosaurus and Composognathus were plentiful. Many bird-like dinosaurs also thrived during this period. The Cretaceous period saw the heyday of the dinosaurs. Many new species of dinosaurs evolved during this period. New dinosaurs such as, the deadly t-rex and the extremely large Giganotosaurus appeared for the first time as did Triceratops and many others.
What Era did dinosaurs live in?
The dinosaurs lived in the Mesozoic Era, which includes the Triassic, Jurassic, and Cretaceous periods. The first dinosaurs appeared in the late Triassic and went extinct at the end of the Cretaceous.
What era did the first dinosaur appear in?
The first dinosaurs lived in the beginning of the Mesozoic Era (or the Age of Reptiles). Birds were amazingly discovered to be dinosaurs so dinosaurs were also alive in the Cenozoic (that's our time-the Age of Mammals) to today.
What type of animal lived only during mesozoic era?
The type of animal that lived only during the Mesozoic Era (Age of Reptiles) were the dinosaurs. They evolved during the late Triassic and the Jurassic periods, and were the largest land creatures during the Cretaceous period of the era.
Where there dinosaurs in California?
California was under the ocean during the Mesozoic, so dinosaurs did not live here. Notable animals from the Mesozoic in California include Shastasaurus, an icthyosaur with one species that grew up to 69 feet long.
