B) the selection for different shaped beaks that best suit different niches
They often respond to Quorum sensing which is determined by the cell density. Bacteria cells secrete molecules that can be detected by other bacteria, Quorum sensing allows bacteria to sense the concentration of these signalling molecules to monitor the local density of cells. It used by bacteria to coordinate certain behaviors , such as the production of biofilms.
The intermediate color or rather condition, in this case "roan", is a result of two alleles being codominant. Codominance occurs when the phenotype (or the physical expression of the gene) of a heterozygote individual expresses both the alleles in a pair of genes. In the given situation, both parents are homozygotes.
Answer:
We should reply by telling the health magazine that every individual in the population should try to follow 'The Recommended Dietary Allowances'. The Food and Nutrition Board of the National Research Council/ National Academy of Sciences has made the RDA which determines the estimated amount of nutrients and calories that a person should uptake in order to live in a healthy manner. It also guides about the top sources of food which can be taken to fulfill the requirements.
