The unit of time based on the revolution of the Earth around the Sun is called a Year.
The unit of time based on the Earth spinning around completely once on its own axis is called a Day.
Already answered in pm ;P
Genetic Drift Defined. Populations of organisms are constantly changing and adapting to their environment. Drastic changes in environmental conditions can sometimes cause drastic changes to the gene pool of the population. Genetic drift is when chance events cause changes in frequencies of alleles in a population.
Motor proteins move chromosomes along the kinetochore microtubules as they become shorten by depolymerizing at their kinetochore ends. Motor proteins at the spindle poles move in the chromosomes with the microtubules depolymerizing at the poles. As the animal increase in length, the spindle poles extend away from each other. This pulling away is due to overlapping nonkinetochore microtubules moving away from each other using motor proteins.,
