<span>The answer could be allopatric or sympatric speciation
depending on the cause of speciation. A population living in the same habitat
could be separated by a physical barrier hence restricting gene flow in the population.
On the other hand, sympatric speciation refers to the formation of different species
from a population that is in the same habitat and geographical area without any
physical separation. This could be due to differences in mating tendencies of individuals
in the population </span>
SWEET!!! is the least sensitive of the following two choices.
The negative feedback principle in human physiology is involved in this case. The inciting factor here is the increase in blood glucose that will be recognized by the pancreatic islet cells (the endocrine part of the pancreas) and will signal insulin release. Insulin upregulates glucose transporter proteins in cells, especially muscle cells, which will then stimulate glucose uptake from blood. Insulin also stimulates glycogen formation in the liver. These events will subsequently lower blood glucose and low blood glucose will now inhibit the insulin secretion by the pancreas. In the event of hypoglycemia or dangerously low blood glucose, the first adaptive mechanism of the body is to produce glucagon from the pancreatic islet cells. Glucagon will stimulate glycogen breakdown in the liver and therefore raise blood glucose levels to normal.<span> </span>
<span>Homologous chromosomes pair up and form tetrad during what phase in meiosis
Prophase 1 would be the phase that this would happen in meiosis.</span>
Even though amoeba, paramecium, and spirogyra are quite different, they are all often classified in the same group, Protista because this group holds various types of eukaryotic organisms that are heterotrophic and unicellular.
This type of classification is not based on evolutionary and genetic similarities, but only on the properties of being unicellular, so there are many vastly different organisms in this group.
