Un cruce entre un conejillo de pelo erizado y uno de pelo liso ha dado 7 crías de pelo erizado y 1 de pelo liso. En otro caso, el
cruce de un conejillo de indias de pelo erizado y otro de pelo liso no ha
dado más que descendientes de pelo erizado. a) ¿Cuál es el carácter
dominante y cual el recesivo? b) ¿Cuál es el genotipo de los padres en
ambos casos?

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point