The answer would be <span>B) </span>Sternomastoid and trapezius :)
This is cyclic change because the population is consistently going up and back down.
Answer: crossing over happens in prophase 1.
Explanation: ( in Portuguese ) os cromossomas homólogos, na profase 1 da meiose, tocam-se, trocando informações sobre o ADN. A esse processo chama se crossing over.
I think C I did some research that one made more sense then all of them I’m not sure tell me if I’m wrong