Answer:
B. Second
Explanation:
In the second trimester the bony parts of the skeleton begin to form
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Given what we know, we can confirm that the basic idea resulting from these studies is that a creature's metabolism is related to its lifespan.
<h3 /><h3>How is metabolism related to lifespan?</h3>
From the studies done and the comparison of the lifespan of certain species in relation to their metabolic rates, scientists have noticed that <u>metabolism</u> and <u>lifespan </u>are inversely proportional. The <u>slower </u>the metabolism of an organism, the <u>longer </u>that organism can live.
Therefore, we can confirm that the basic idea is that a creature's metabolism is inversely proportional to its lifespan, meaning that the faster the metabolism, the shorter the lifespan of the creature in question.
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It is an example of directional selection.
The different kinds of natural selection can influence the distribution of phenotypes within a population. In stabilizing selection, an average phenotype is preferred.
In directional selection, a modification in the surrounding changes the spectrum of the observed phenotypes, and in diversifying selection the extreme values for a trait are preferred over the transitional values. This kind of selection usually pushes speciation.
The directional selection, in the field of population genetics, refers to a mode of natural selection in which an extreme phenotype is preferred over other phenotypes, making the allele frequency to change with time in the orientation of that phenotype.
The correct answer is B. Contact comfort
Explanation:
Studies with Rhesus monkeys were carried out by the psychologists Harry Harlow to study psychological and emotional aspects related to maternal separation and isolation. In this experiment, Harlow used baby monkeys and observed their behavior in different situations that included separating the baby and the mother, providing a fake mother, isolating baby monkeys for a long time and allowing baby monkeys to choose between their mother or food. The results of this experiment showed mother-infant emotional bonds were key for the development and socialization of monkeys, this could be explained as mother monkeys provided contact comfort which supported a positive development and prevailed over food or nourishment.
