my name is Oladeji emmanuel I hail from Oyo state Nigeria
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Sickle cell anemia results from a mutation in a gene called HBB, which contains the blueprint for cells to make part of a protein called hemoglobin. The hemoglobin protein is made up of two alpha chains and two beta chains.
Sickle cell anemia is the result of a point mutation, a change in just one nucleotide in the gene for hemoglobin. This mutation causes the hemoglobin in red blood cells to distort to a sickle shape when deoxygenated. The sickle-shaped blood cells clog in the capillaries, cutting off circulation.
Answer:
volcanic activity
Explanation:
we just cant control nature
Origins and early evolution of herbivory in tetrapod's About 300 million years ago, in the Late Carboniferous, the first herbivorous tetrapod's evolved. By the Late Permian, continental ecosystems of `modern' character had been formed, with a massive standing crop of herbivores sustaining relatively few predators. In order to process high-fiber plant material, it is necessary to make anatomical changes to the jaw, digestive system, and dentition as well as to acquire microbial endosymbionts that can create the enzymes required for fermentative digestion of cellulose, the main component of plant cell walls. Recent tetrapod phylogenetic studies show that several lineages separately developed endosymbiotic cellulitis throughout the late Paleozoic.
What is tetrapod's?
Animals classified as Sarcopterygii include tetrapod's. Tetrapod's, which include hawks, frogs, and turtles, are land-dwelling creatures. Along with such, there are marine creatures including sea lions, whales, sea snakes, seals, dolphins, and sea turtles.
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