Answer:
B:animal cells have cell walls
The central sleep apnea is a condition, in which the person rapidly stops and starts breathing during the sleep.
The condition of the central sleep apnea is due to the change in the signaling pattern during the time of sleep. During this process, the respiratory centers present in the brain do not respond well and sometimes do not send signals to the muscle responsible for respiration.
Hence, the given blank can be filled with central sleep apnea.
Punnet square
Pink flower x pink flower
rw rw
F1 generation
rr, rw, rw, ww
Probability
red flower (rr) = 1
pink flower (rw) = 2
wite flower (ww) = 1
