Say he crossed peas. Some peas have wrinkled skin and some peas have smooth skin, while other peas had kind of smooth but kind of wrinkled skin, kind of in the middle.
The peas with wrinkled skin have the genotype WW, and the peas with smooth skin have the genotype ww, and the peas that are in the middle have the genotype Ww.
He noticed that there was a 1:2:1 ratio of WW:Ww:ww peas in his progeny when crossing WW x ww pea plants for the parent generation. In other words, 25% homozygous dominant, 50% heterozygous, and 25% homozygous recessive.
Punnett square:
WW / ww
WW WW | Ww
ww Ww | ww
If excitatory postsynaptic potentials (EPSPs) are produced nearly simultaneously through two different synapses on the same postsynaptic neuron, the EPSPs can add together to create spatial summation.
Spatial summation is the summation that occurs in the nervous system in which, the action potential on the postsynaptic neuron is generated as a result of many presynaptic neurons' production of subthreshold. As a result, in this instance of simultaneous summation, numerous ESPSs contribute to the production of an action potential.
while, when several subthresholds are produced over time by a single presynaptic neuron, it is referred to as temporal summation in the nervous system. The total of these subthresholds reaches a critical point when it is sufficient to generate or fire an action potential on the postsynaptic neuron. Each subthreshold in this case is produced by the presynaptic neuron's release of neurotransmitters into the synaptic gap.
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Answer :
Thermal convection
Explanation :
The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other.
Seems pretty tough
Good luck with it
Answer:
Light energy from the sun
Explanation:
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