Seismic activity, weather, erosion, and mishandling are a couple. Need anymore let me know
The correct answer is option B
A motor neuron is a neuron which consists of a cell body and axon. Cell body lies in the motor cortex, spinal cord or brainstem and axon projects outside the spinal cord or inside the spinal cord which directly or indirectly controls the function of muscles or glands.
The functions associated with the movement of muscles or glands are directly affected by the injured motor neurons.
A punnet square predict the traits of offspring genetic crosses and test crosses.
<u>Explanation:</u>
In pea plants, the traits or characteristics inheritance is been observed and studies by Gregor Mendel. A model was proposed by him, in which the characteristics or traits are specified from genes. Genes can take different alleles or versions. The appearance of an organism can be determined by the dominant alleles. These hides the characteristics of recessive alleles.
The law of segregation is, When gametes are made by an organism the copy of one gene is passed to each gametes. The combinations of allele which is genotype, and the phenotypes which are the characteristics that are observable can be predicted by a Punnett square. This is done by genetic crosses.
In order to predict whether the organism is heterozygous or homozygous can be determined by a test crosses.