Using a Punnett square, predict the percentage of the F2 generation that would have both recessive traits (rryy) in a dihybrid cross that starts with F1 generation parents with the genotype RrYy. A. 18.75%
B. 37.5%
C. 6.25&
D. 50%

Which symbols below represent the ions found in the glass of water ? a. oh- and h+ b. co2 and o2 c. o2 and h2 d. nh3- and h+

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

Which type of respiration takes place when there is no oxygen present