The dilatation of blood vessels allowing the passage of fluid, antibodies, and WBCs into theinfected body area is known asvasodilation
A biologist would most likely concentrate on homologous features to find and analyse an evolutionary relationship between two species, finding homologous traits between species might help biologists to understand the evolution of animals, whereas concentrating on analogous features might help to compare the evolution of different species. Hope this helped!
When the circular muscles contract, the earthworm stretches, becoming longer and thinner. The earthworm uses its setae to anchor the front of its body in the soil. Now the longitudinal muscles contract and the earthworm becomes shorter and wider or it bends from one side to the other, pulling the body forward.
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The resulting embryo will be an individual which has 47 chromosomes. Chromosome number need to be precise or it will drastically alter the development of the embryo. Trisomy 18 is known as de Edward´s syndrome. This condition is the second most common type of trisomy after down syndrome and is more common in females. The effect of these genetic disorder can vary among patient and depends on the extent of the extra copy, genetic history and other variables. Most newborn while die during the first days or couple of months.