Answer:
When a strain of bacteria is able to overcome the antibiotic so that it is no longer useful.
Explanation:
Antibiotic resistance is when a bacteria evolves a immunity to that antibiotic, and is most commonly a product of overuse of antibiotics.
Answer:
All plants of purple colour.
Explanation:
All the offspring plants of F1 generation have purple leaves because Ay is dominant allele which appear in the leaf colour instead of A2 which is a recessive allele. In the F1 generation, the dominant allele must appear in the shape and structure of the offspring whereas the recessive allele does not appear so offspring of purple leaves appear if plants have purple leaves cross with white leaves.
Answer:
true deafness is actually recessive