P: WWDD x wwdd
Formed gametes are WD and wd
F1 generation: WwDd all phenotypes are white and disc-shaped (dominant traits are expresed)
F2 generation: 9 : 3 : 3 : 1 are ratios of phenotypes (white and disc-shaped : white sphere-shaped : yellow disc-shaped : yellow sphere shaped). <span> <span><span> <span>
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True. Please Mark Brainliest!!!
Globular clusters are formed from tightly packed groups of older stars
Answer:a. A timer to signal how long to brush teeth
Explanation:
Stimulus control of behavior occurs when the performance of a particular behavior is controlled by the presence or absence of a discriminative stimulus. For example, the presence of a stop sign (a discriminative stimulus) at a traffic intersection increases the probability that "braking" behavior will occur.
The answer is host to parasite