Explanation:
In the early days of development, in an embryo, the cells are pluripotent and can differentiate into any kind of cell of the organism. As the embryo develops, autocrine and paracrine signaling between the cells of the embryo causes the cells to migrate to particular regions of the embryo and begin differentiating into respective parts of the organism. This signaling causes differential silencing of particular genes of the cells depending on the type of cells they will differentiate into. As the embryo develops into a fully grown organism, these cells lose potency (except for stem cells) and become fully differentiated into respective limbs or organs of the organism.
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In the first image, those are fake ribs that are attached to the sternum through the costal cartilage
in the second image are real ribs since they are directly attached to the sternum
Answer:
Mineral salt
Explanation:
The mineral salt is absorbed into the roots inform of ions (from the soil) through the process of diffusion
Answer:
A positive result.
Explanation:
Biuret test is a test performed to check whether proteins are present in a given sample or not. If the solution changes its colour to violet then it means that the sample contains proteins. If the colour is not changed to violet, then the result would be negative and protein would not be present in the sample.
Steaks contain a rich amount of protein. Hence, when Biuret test is performed for a steak solution, the results will be positive. The steak sample would change colour to violet.
Sanderson's cross-national study indicated that international migration increases overall levels of human development. Thus, the correct option is A.
<h3>What is Migration?</h3>
Migration may be defined as the movement of people from one place to another in search of resources better than their native one.
International migration increases the overall standards of human development because it initiates new opportunities and trade aspects of people of one country to another.
It also leads to improved human development outcomes in major areas like education, health, and finance.
Therefore, the correct option for this question is A.
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