The answer is; B
Mutation is one source of variation (in addition to sex and gene flow). Mutations are rare and occur in a small proportion of individuals. However, due to the advantage that the genetic mutation confers to these individuals, their chances of passing the genes to the next generation is higher than that of the general population.
This way, the allelic frequencies of these advantageous mutated genes increase with each generation and eventually become the majority population over time.
Answer:
c.The lac genes would be expressed continuously.
Explanation:
The <u>correct response is (c)</u> The lac genes would be expressed continuously because the active repressor cannot bind to the mutant O c operator. Accordingly, the repressor will not be able to inhibit RNA polymerase from binding to the lac promoter, producing the lac operon to be transcribed continuously or constitutively. Formerly again the level of appearance is inversely proportionate to the level of glucose already present.
Answer: Option A and E.
Explanation:
Norther hemisphere Is the half of the Earth that lies on the north of the equator. The equator is the line that divide the Earth into two halves.
During the winter, the northern hemisphere is colder because the northern hemisphere move away from the sun and receive less sunlight form the sun. The sun is very high in temperature and it has high heat, when the northern hemisphere move away from it, there is lower heat or temperature that get to it , making it to become cooler or have lower temperature. The countries in the northern hemisphere comprises of all countries in Europe, North America, Asia,part of South America and little part of Africa.
