If pathogen A is more resistant to an erythromycin disc on a Kirby-Bauer plate compared to B, then A will have a smaller zone of inhibition compared to B.
<h3>What is the zone of inhibition?</h3>
The zone of inhibition can be defined as a circular region in a plate where pathogenic agents cannot grow.
This zone (zone of inhibition) can determine the action of different drugs like antibiotics for a given disease.
The zone of inhibition test is also widely known as the Kirby-Bauer Test due to their developers.
Learn more about the zone of inhibition here:
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Answer:
Suppose you have a parent plant with purple flowers and a parent plant with white flowers. Because the b allele is recessive, you know that the white-flowered parent must have the genotype bb. The purple-flowered parent, on the other hand, could have either the BB or the Bb genotype. The Punnett square in Figure below shows this cross.
Explanation:
Pasteur reasoned the factor that made the bacteria less deadly was exposure to oxygen. The discovery of the chicken cholera vaccine by Louis Pasteur revolutionized work in infectious diseases and can be considered the birth of immunology.
Answer:
C. There is no genetic drift
Explanation:
A population is said to be in genetic equilibrium when the genetic variation of a population remains constant over many generations.
For a population to remain in genetic equilibrium it is necessary that external factors that disturb the equilibrium should not be present.
The external factors that are responsible for disturbing the genetic equilibrium are mutations, non-random mating, genetic drift and gene flow.
Genetic drift occurs when due to a chance event the allele frequency of a population either increases or decreases and this is usually common in small populations.
Thus, genetic drift should not occur so that the population can be in genetic equilibrium.
