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Which of the following describes two species that exhibit a Prezygotic mechanism of reproductive isolation?

Which of the following describes two species that exhibit a prezygotic mechanism of reproductive isolation? The rice species Oryza sativa and O. glaberrima can be crossed to produce F1 hybrid plants, but these hybrid plants produce empty pollen grains that cannot carry out fertilization.

Which one is an example of a Prezygotic barrier in which the two different species do mate?

Which one is an example of a prezygotic barrier in which the two different species do mate? Two dragonfly species regularly mate, but their gametes are incompatible. -No zygote is formed, but mating does occur.

Which mechanism of reproductive isolation would separate two populations of frogs with different mating calls?

Which mechanism isolates two populations of similar frogs with different mating calls? reproductive isolation three types of mechanisms are temporal, behavioral and geographic isolation. Behavioral isolation isolates the frogs.

What is mechanical isolation?

Mechanical isolation is a form of reproductive isolation that prevents two different species from interbreeding with one another.

How do you create a pure bacterial culture?

Obtaining a pure culture of bacteria is usually accomplished by spreading bacteria on the surface of a solid medium so that a single cell occupies an isolated portion of the agar surface. This single cell will go through repeated multiplication to produce a visible colony of similar cells, or clones.

What are microbial techniques?

Definition. Microbiology techniques are methods used for the study of microbes, including bacteria and microscopic fungi and protists. They include methods to survey, culture, stain, identify, engineer and manipulate microbes.

What is good microbiological techniques?

Good Microbiological Practice (GMP) consists of aseptic techniques and other good microbiological practices that are not uniformly defined but are necessary to prevent contamination of the laboratory with the agents being handled and contamination of the work with agents from the environment.

What are 5 aseptic techniques?

What is aseptic technique used for?

  • handling surgery equipment.
  • helping with a baby’s birth by vaginal delivery.
  • handling dialysis catheters.
  • performing dialysis.
  • inserting a chest tube.
  • inserting a urinary catheter.
  • inserting central intravenous (IV) or arterial lines.
  • inserting other draining devices.

What are the standard microbiological practices?

Standard microbiological practices (SMPs) are generally defined as the basic “hygiene” practices that apply to all labs that manipulate microorganisms or any biological materials that contain microorganisms.

What is good microbiological laboratory practices?

good laboratory practices in a microbiology laboratory consist of activities that depend on several principles: aseptic technique, control of media, control of test strains, control of equipment, diligent recording and evaluation of data, and training of the laboratory stuff.

What is Good Laboratory Practices guidelines?

Good laboratory practice or GLP is a set of principles intended to assure the quality and integrity of non-clinical laboratory studies that are intended to support research or marketing permits for products regulated by government agencies.

WHO good practices for pharmaceutical microbiology laboratories Annex 2?

2 Sterility testing should be performed under aseptic conditions, which should be equivalent to air quality standards required for the aseptic manufacture of pharmaceutical products. The premises, services and equipment should be subject to the appropriate qualification process.

What is Gmlp biology?

Good Microbiological Laboratory Practices (GMLP) Good microbiological laboratory practices (e.g., aseptic technique) when handling microorganisms have prevented contamination of the workplace from other microorganisms or nontarget microorganisms.

What is the significance of flaming the bottle test tube necks How does it help with preventing contamination?

Flaming the neck of bottles and test tubes This ensures that no microorganisms enter the mouth of the vessel to contaminate the culture or the medium. Passing the mouth of the bottle through a flame produces a convection current away from the opening, and helps to prevent contamination.

Why is it important to practice universal safety procedures in the microbiology laboratory?

Safety in a microbiology laboratory is important in the prevention of infection because virulent and/or potentially pathogenic microorganisms are cultured (grown) there. In addition to microorganisms, there are some chemicals used in this laboratory that are potentially harmful.

When working in the laboratory next to a Bunsen flame can it lower the risk of contamination?

In the laboratory, working beside a Bunsen burner creates an upward flow of air through convection, lowering the risk that dust or other contaminants will settle on the sterile surface or equipment.