Answer:
The best answer to the question, would be: In terms of nearness to the trunk, the antebrachium is proximal to the carpal region.
Explanation:
In anatomy, we use certain terminology to be able to express where different anatomical parts of the body are positioned and located, related to others. Just like through the axes that are used to divide our bodies into sections, and these lines help us to determine exactly where a body part, organ, or region, is located in reference to others, we can also use central regions, like the trunk of the body, to mention the location of other parts in relation to it, and to others. The carpal and antebrachium regions are parts of the arms, and both, relative to the trunk, are distal, which means, far from it. But, when taking the trunk as reference, we talk about the location of these two parts in relation to one another, and the trunk we say that both are proximal to one another because they both are closer to each other than either one is to the trunk itself.
Answer:
The best answer to the question: Development of the testes in the embryo is due to:___, would be, C: Presence of a single Y chromosome.
Explanation:
The subject of sexual differentiation into male, or female, during the prenatal, and especially embryonic stage, is still a matter of study and research. Although many of the processes are widely accepted and understood, studies show that there may be other factors involved in sexual differentiation. However, what has been known so far is that in the embryonic stage, the presence of TDF (testis-determining factor) is crucial to this determination. TDF is a product of the presence of the Y chromosome in the gene known as SRY. It has been seen that when this protein product is not presence, there will be no growth of the necessary parts for male differentiation from a female.
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