An example is the drop of white-colored moths and an increase in dark-colored moths in London after the industrial revolution. Because darker-colored moths could camouflage well in the sooty environment (due to industrial emissions), they were preyed less by their predators. White-colored moths stood out and due to being preyed more their numbers declined over generations – because they wouldn’t survive long enough to reproduce and pass their genes to the next generation. The predominant color for the moths’ population became dark color.
Explanation:
a) movement of molecules from an area of high concentration to low concentration
Answer:
incorrect
Explanation:
diffusion is the movement of particles <u>with</u> the concentration gradient
for example: over time, food coloring and water mix and become one same color.
Answer:
3. CABD
Explanation:
The gene mapping refers to providing position to the genes on the chromosomes. The first gene map was constructed by the Alfred Sturtevant on the basis of recombinant produces or recombination frequency which was calculated.
The gene mapping refers to providing position to the genes on the chromosomes.
In the given question to construct gene map:
1. Look for the highest recombination frequency that is 50% between the C and D.
2. Now look for second-highest value and place the gene accordingly.
3.Similarly, place the genes in the decreasing order of recombination frequency and this will result that the sequence of the genes is- CABD.
Thus, Option-3 is correct.
