Specific proteins are made only at certain times in certain cells.
Answer:
Codominance
Explanation:
Codominance is the condition in which both the alleles of a trait are dominant and are equally expressed when comes together in the offspring. For example in ABO blood grouping in humans A and B allele are dominant so when they both come together in an offspring then they produce AB blood group in that offspring.
Here when true-breeding strains of salamander having yellow and red stripes are crossed together they produce offsprings having both yellow and red stripes that shows that the traits are codominant.
Therefore the pattern of codominance is most consistent with this observation.
Yes, that is true. Yellow and green colors are now the major colors of these fire engines due to our eye-sights. In the dark, red is one of the least visible colors so imagine what would happen if it was at night and you could barely see it. On the other hand, colors like yellow and green are spotted more easily and raise awareness in a proper and eye-catching way.
I hope I was able to help you! :)