Prior to the work of Mendel, inheritance was viewed as resulting from the BLENDING of phenotypic traits within fixed, unchanging species. Mendel discovered how traits are inherited across generations.
Mendel was a scientist who experimented on pea hybrids and now he is known as the father of modern genetics.
The Mendel principles include:
- The Law of Segregation posits that phenotypic inherited traits can be controlled by two 'factors' (i.e., alleles), which separate (i.e., segregate) and pass into germinal gametic cells.
- The Law of Independent Assortment posits that these factors do not depend upon each other, but instead, alleles are independently sorted into germinal (gametes) cells.
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Answer:
C. Exocytosis uses transport vesicles to export materials from the cell
Explanation:
Exocytosis is the reverse process of endocytosis including the expulsion of the material that is membrane -encapsulated (material is packaged in the vesicles ) inside the cell out of the cell. It has following steps :
1) The cell forms a vesicle around a material which is to be expelled.
2) The vesicle is transported to the cell membrane.
3) The vesicle membrane fuses with the cell membrane and releases the contents from the cell.
Hence option C. Exocytosis uses transport vesicles to export materials from the cell IS THE RIGHT OPTION.
Correct answer is label B. on the purple shaded area which is inside the ventral horn and dorsal.
Spinal cord is termed as tubular or long thin structure which is made of nervous tissue. It is being extended to the lumbar region which is found in the brainstem from the medulla oblongata.
This is enclosed in the central canal which contains cerebrospinal fluid of the spinal cord. If we combine spinal cord and the brain we come up with Central Nervous System.
Between the second and first lumbar vertebrae is where spinal cord extends and it is where it ends.
<em>The major function of spinal cord is nerve signal transmission from motor cortex to body. </em>
