Remember that organisms within a particular environment all adapt in a simultaneous basis depending on the type of environment presented within them. This is part of Charles Darwin's theory of evolution when he observed animals in the Galapagos island.
This survival instinct of the frog can be of disadvantage to it because other animals might be able to recognize their calls due to familiarity of this naturally occurring trait that they do. The frogs can now be more prone to predator attacks within its environment.
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If you want 100% true statements, try searching this in biographys. I'm too lazy though so here's something from the internet mate.
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The most common conditions that are caused by an autosomal recessive gene mutation are cystic fibrosis, thalassaemia, haemochromatosis and Tay Sachs disease. Figure 7.7: Autosomal recessive inheritance when both parents are affected or predisposed to develop the condifion.
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Once again there is no Venn diagram I can help if the image was there.
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