A polygenic trait is a trait controlled by many (poly) genes. Human skin color is an example; it thought to be the controlled by about 12 genes.
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im pretty sure the answer is C let me know if its wrong dont give me brainiest
Answer:
''The air high above the air is colder than air at the surface. The vapor rises until it reaches a low enough temperature and pressure to condense water vapor into water droplets and form a cloud. When vapor condenses into liquid or solid particles, it loses some of its energy to the air''. From Google PLz like Thx ! @BRAINLY
Explanation:
Answer:
The presence of specific receptors on the target cells allows them to respond to the signaling molecules.
Explanation:
Signaling molecules move throughout the body but exhibit their effect only on certain cells. This is due to the presence of signaling molecule specific receptors on the target cells. The target cells have cell surface or intracellular receptors to which the signaling molecules bind to generate their effect. The absence of these receptors in other cells does not allow the signaling molecules to exert any physiological response on them.
For example, liver and muscle cells mostly have insulin receptors and respond to the presence of insulin in blood by increased uptake of glucose from the blood.
