The color of a star depends on its blank, and blank-colored stars are the coolest.
blank 1: composition, distance, temperature
blank 2: red, white, yellow

a time line cause it goes from 685 to 978

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.