In one student's family, two of the children have curly hair, one child has wavy hair, and the fourth child has straight hair. Which of these processes is responsible for the variety of hair texture in this family?

the answer will be a) proteins i believe

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".