Question
Explain the process of divergent evolution in detail. Also, write down the driving force behind it.
✓
Answer
Divergent evolution is the evolution of a number of different forms of animals or plants froms of a common ancestral form. The driving force behind, it is adaptations to newly involved habitat and the prevailing environmental conditions there. As the original population increases in size, it spreads out from its centre of origin to exploit new habitas and food resources. In this results in a number of populations each adapted to its particular habitat eventually these populations will differ from each other sufficiently to become new species. A good example of this process is the evolution of the Australian marsupials into species adapted as carnivores, herbivores, burrowers, fliers, etc. Another example is that of peritadactyl limb in mammals.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
- How is mature insulin different from proinsulin secreted by pancreas in humans?
- Explain how was human functional insulin produced using rDNA technology.
- Why is the functional insulin thus produced considered better than the ones used earlier by diabetic patients?
Draw a neat diagram of the female reproductive system and label the parts associated with the following (a) production of gamete, (b) site of fertilisation (c) site of implantation and, (d) birth canal.
The following is the illustration of the sequence of ovarian events (a – i) in a human female.
What is the difference between “d” and “e” ?
Write the symptoms of haemophilia and sickle-cell anaemia in humans. Explain how the inheritance pattern of the two diseases differ from each other.
Enumerate the events in the ovary of a human female during:
Luteal phase of menstrual cycle.
Luteal phase of menstrual cycle.
What are the key concepts in the evolution theory of Darwin?
Describe the roles of heat, primers and the bacterium Thermus aquaticus in the process of PCR.
Describe the functions of the following:
Trophoblast.
Trophoblast.
How would phenotypes of monohybrid F1 and F2 progeny showing incomplete dominance in Snapdragon and co–dominance in human blood group be different from Mendelian monohybrid F1 and F2 progeny? Explain.
Explain the development of a secondary oocyte (ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.
OR
When does oogenesis start in humans? Name the three hormones and their sources, linked with oogenesis. How do they influence the process of oogenesis? Explain.