Answer:
none of the above
Explanation:
Sperm pass through the deferent duct.
During the course of initiating the scientific method, the hypothesis is considered the first major step. Before that would be identifying a subject and observing a particular issue, animal, etc.
The correct answer is A. <span>Using the same restriction enzyme for cutting the desired gene and the vector and using ligase for pasting the gene into the vector. Vectors ensure DNA replication in cells. Restriction enzymes slice the DNA in specific sites; it should be the same so as the two ends will easily complement back together. </span>
Heavy metals work by dissolving the cell wall.
Sterilization describes a method that destroys or gets rid of all styles of microbial existence and is done in health-care facilities with the aid of bodily or chemical strategies. Using a physical or chemical method to smash vegetative pathogens is: disinfection. using chemical marketers immediately on uncovered frame surfaces to damage or inhibit vegetative pathogens.
The term heavy metallic refers to any steel chemical detail that has a notably excessive density and is poisonous or toxic at low concentrations. Examples of heavy metals encompass mercury (Hg), cadmium (Cd), arsenic (As), chromium (Cr), thallium (Tl), and lead (Pb). Even though the beginning of the time period heavy metallic is broadly attributed to novelist William Burroughs, its use dates nicely again into the nineteenth century, while it cited cannon or to electricity greater usually. It additionally has been used to classify certain elements or compounds, as in the phrase heavy metallic poisoning.
Learn more about heavy metal here:-brainly.com/question/24841392
#SPJ4