Answer:
Populations from the Americas started from a founding population with a high frequency of the O allele
Explanation:
Human blood type is determined by three different codominant alleles: IA, IB, and, which are named A (IA), B (IB), and O (i). Each person has two blood type alleles, i.e., one allele inherited from the mother and one from the father. The frequency of the O blood allele is very high in indigenous populations, and in Central and South American populations this allele may reach a frequency of 1 (100%). In consequence, the predominance of the O blood allele in Native American populations suggests that these populations descended from a founding population that had a high frequency of the O blood allele. A founder effect may even cause the fixation of one allele within a population, and this phenomenon is known to be associated with the loss of genetic variation.
your answer would be: <span>Webbed toes help frogs move around better in water. They also have semi-permeable skin that allows them to </span>absorb<span> the water (since they do not drink) and their bodies dehydrate if they are not in water for long amounts of time.</span>
Answer:
<em>The</em><em> </em><em>fi</em><em>rst</em><em> </em><em>option</em>
Explanation:
<em>The</em><em> </em><em>cell</em><em> </em><em>membrane</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>st</em><em>r</em><em>u</em><em>c</em><em>t</em><em>u</em><em>r</em><em>e</em><em> </em><em>that</em><em> </em><em>forms</em><em> </em><em>the</em><em> </em><em>surf</em><em>ace</em><em> </em><em>of</em><em> </em><em>a</em><em> </em><em>cell</em><em> </em><em>separating</em><em> </em><em>it's </em><em>contents</em><em> </em><em>from</em><em> </em><em>the</em><em> </em><em>out</em><em>side</em><em> </em><em>world</em><em>.</em>
