The unusually high frequency of "blue skin" in the area is an example of <u>genetic drift</u>.
<u>Explanation:</u>
It is a shift in the occurrence of an established gene variant within a population due to spontaneous organism screening. The offspring alleles are a composite of those in the parents and opportunity has a role to play in deciding whether or not a given person persists and reproduces.
The bottleneck impact is an interesting instance of genetic drift which take place when the population size is drastically reduced. Occurrences like natural disasters such as earthquakes, floods, fires can destroy a city, eliminate most people and leave a tiny, random assortment of survivors remaining.
The thin tubes that form between the centrioles during mitosis are the spindle fibres. Spindle fibers originates from a protein structure that divides the genetic material in a cell. They are necessary for the equal division of the chromosomes in a parental cell into two daughter cells during bth types of nuclear division (mitosis and meiosis). During the process of mitosis they are called mitotic spindles.
Recessive. I don't know the topic of your question so I dont fully know. but if you are talking about dominant and receive then white would be a receive gene.