Answer:
A) nutrient A only
Explanation:
In this case, enzyme A is required for the digestion of nutrient A, thereby evidencing that the mutation affects the enzymatic pathway and the mutant strain only can grow by supplementation with this nutrient. In molecular biology, mutant strains are useful to study enzymatic functions (for instance, the role of enzyme A in nutrient assimilation), as well as to examine downstream signaling pathways.
In experimental design, spontaneous mutations are induced to study their effects on the phenotype. Subsequently, reverse mutations may also be induced to reverse the forward mutation, thus restoring the original wild-type phenotype.
Answer: B. reforestation
Reforestation is the process of growing plants and trees in an area on large scale in order to create land a forest reserve which can allow the growth and abundance of floral and faunal species in future. Reforestation is the biodiversity restoration method that the biologist should use to meet their goals like : recreation of habitats for wildlife in a particular area, help against climate change as plants are the fixers of atmospheric carbon utilize this for photosynthesis and prevents the raising of atmospheric temperature.
