Heredity and Evolution
Heredity and Evolution
Question 1. If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% Of the same population, which trait is likely to have arisen earlier ?
Answer: As species are asexually reproducing, there would be only very minor differences generated due to small inaccuracies in DNA copying, so trait B, which exists in 60% of the same population may get inherited earlier while trait A, which exists in 10% of the population may be originated late due to variations. Thus, trait B have arisen earlier since it is present in 60% of the same population.
Question 2. How does the creation of variations in a species promote survival ?
Answer: Natural selection selects the individuals having useful variations which ensure their survival in the prevailing conditions of environment. Variant individuals that can withstand or cope with prevailing environment will survive better and will increase in number through differential reproduction.
heredity and evolution class 10 questions
heredity and evolution class 10 videos
heredity and evolution class 10 ppt
heredity and evolution class 10 ncert solutions
heredity and evolution class 10 notes
heredity and evolution class 12
heredity and evolution class 10 exam fear
heredity and evolution in hindi
heredity and evolution class 10 important questions with answers pdf