<span>The loss of the gene coding for an orange crest in the bird population described above is an example of <span>genetic drift.
</span></span><span>Genetic Drift is the change in the frequency of an allele in a population due to random sampling of organisms.</span>
"They contain at least one double or triple bond" is true of saturated fatty acid chains. This extra bond is why they are called "saturated", because they had less ability to take on other bonds.
Answer:
The food type changes in a given environment, then the amount of each type of bird beak will changes as birds with beaks more suited to the available food will consume more successfully over time. The independent variable of the lab is the type of food that is available to the birds.
