If this is an autosomal recessive disorder, what is the probability that individual II-3 is a heterozygous carrier of the disorder

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

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

In general, are there any major differences that you can see? explain