Industrial revolution in England
How did industrial revolution in the England provide an example of the natural selection?
Expert
One of the classic illustrations of natural selection is regarding the moths of the industrial zones of England in end of 19th century and the starting of 20th century. As the industrial revolution advanced the bark of trees which moths landed on became darker because of the soot released from the factories. The population of light moths then reduced and was substituted by the population of dark moths as the mimicry of dark moths in new environment preserved them from predators, that is, they had an adaptive benefit in that new environment. Light moths in their turn suffered the negative result of natural selection for becoming more visible to predators and were almost eliminated. In the open forest far from factories however it was experimentally verified that light moths managed their adaptive benefit and the dark moths continued to be more simply found by predators.
Give a brief description of the term embryonic sac? Which are the cells that form embryonic sac? And also write down their ploidies?
Name the form of protozoan reproduction which produces more variability?
Explain what is function of the venous and arterial blood?
Is there any chloroplast in the cyanobacteria? Answer: In cyanobacteria there are no chloroplasts and the chlorophyll layers are scattered in cytosol.
Systematics & taxonomy in biology: The science of classification or grouping organisms based on similarities and differences is taxonomy. Systematics is a dynamic broad field of science, of which taxonomy is a part.
According to the number of limbs, how are the three main arthropod groups characterized? Answer: Most of the crustaceans contain five pairs of limbs. Insects contain
Name the chromosome region where centromere is situated. How chromosomes categorized in relation to the situation of their centromere?
How can amine groups be categorized?
Specify portion of the human visual system where the receptors which sense light, that is, the photoreceptor cells, are situated? How those cells generally work?
Write down the immuno suppressive agents.
18,76,764
1940864 Asked
3,689
Active Tutors
1434713
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!