Answer: The color of the iris is the example of polygenic inheritance.
Explanation:
Polygenic inheritance can be defined as the inheritance in which one trait is controlled by the two or more than two genes. The color of the skin, color of iris, weight and height are polygenic traits. The color of the iris is the polygenic trait the number of genes responsible for this are unknown but these genes are responsible for the synthesis of melanin pigment imparting color to the iris. OCA2 and HERC2 are the chief genes present on chromosome 15 responsible for this trait. Dark brown and black eyes are expected to have more amount of melanin as compared to the green and hazel eyes.
The functions of saliva:
lubricates the mouth
has enzymes to begin
breaking down down
helps prevent tooth decay and gum disease
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the function of the gallbladder
stores and release bile
breaks up fat in food
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the function of the stomach:
it breaks down and digest food
it also helps kill harmful bacteria
digestion and absorption
<span>The release of water from the Stoma of the cells caused the plant to wily and droop. The Turgor Pressure In the plant cells help it to maintain its structure during this period</span>
<span>Until about 200 million years ago, Earth's continents were joined as a single land mass called Pangaea.</span>