Advertisements
Advertisements
Question
Name any three types of premating isolating mechanisms.
Advertisements
Solution
Pre-mating or pre-zygotic isolating mechanism: This mechanism prevents fertilization and zygote formation.
- Habitat isolation or (Ecological isolation): Members of a population living in the same geographic region but occupying separate habitats in such a way that potential mates do not meet.
- Seasonal or temporal isolation: Members of a population living in the same geographic region but are sexually mature at different years or different times of the year.
- Ethological isolation: Due to specific mating behavior the members of the population do not mate.
- Mechanical Isolation: Members of two populations have differences in the structure of reproductive organs.
APPEARS IN
RELATED QUESTIONS
With the help of suitable examples, explain why certain traits cannot be passed on to the next generation. What are such traits called?
State one characteristic which shows that the birds are very closely related to dinosaurs.
Match the terms given in column I with those given in column II :
| Column I | Column II |
| (1) Fossil | (a) A famous evolutionist |
| (2) A theory of evolution | (b) Survival of the fittest |
| (3) Probable ancestor of birds | (c) Petrified remains of prehistoric life |
| (4) Charles Darwin | (d) Father of genetics |
| (5) Gregor Mendel | (e) Archaeopteryx |
Explain the terms 'analogous organs' and 'homologous organs' with examples.
Evolution means ______.
Define Organic evolution.
Short answer question.
Write a note on Genetic drift.
The idea of mutation was brought forth by:
Theory of inheritance of acquired character was given by:
Which one of the following was not given by Darwin's theory of evolution?
