Advertisements
Advertisements
प्रश्न
Name any three types of premating isolating mechanisms.
उत्तर
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
संबंधित प्रश्न
Define evolution. How does it occur?
Insects, octopus, planaria and vertebrates possess eyes. Can we group these animals together on the basis of eyes that they possess ? Justify your answer giving reason.
What is meant by acquired and inherited traits? Explain with one example each.
Complete the statement by choosing correct options from below .
Evolution means -- -- -- --.
What is chromosomal aberration? Give any two types of aberrations found in the population.
The sequence of gradual changes which takes place in the primitive organisms over millions of years in which new species are produced is known as ______
Variations during mutations of meiotic recombinations are ______.
The chronological order of human evolution from early to recent stages is ______.
What is a connecting link?
Which fossil animal is considered as the connecting link between reptiles and birds? Give any one character of each class found in it.
