The condition called parasitism is characterized as a non-symbiotic relationship. Thus, the correct option is C.
<h3>What is Parasitism?</h3>
Parasitism may be defined as a type of +,- interaction in which the population of species 1 is benefitted while the population of species 2 is harmed.
In this type of interaction, one organism feeds on other but does not kill it. And even some parasites like tapeworms are attached to their hosts for most of their lives.
Thus, the correct option for this question is C.
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Answer: A variable within a scientific experiment is something that is changed (i.e. it varies). There should be only one manipulated variable within a scientific experiment so that the experimenter can be certain it is this variable which causes a pattern in the resultant data, if any exists at all.
Explanation:
Answer:
C) The ancestral population probably had this type of blood pigment, but it was lost through genetic drift in the other 29 populations.
Explanation:
The presence of a blood pigment that is extraordinarily effective at carrying oxygen is a beneficial genetic trait and should be favored by natural selection. According to the given information, the organisms of only a single population of pupfish have this trait while the others do not have it.
This means that the trait was present in the ancestral populations of the pupfish but was lost in the other populations due to some accidental/chance event. Loss or fixing of an allele by a chance event is called genetic drift. It does not include any natural selection but results in a random change in the allele frequencies of a population. Therefore, loss of the trait by genetic trait might have occurred in the other populations.
