Class 10 Science - Chapter Heredity and Evolution NCERT Solutions | If a trait A exists in 10% of a populati
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?
B trait has 60% population and A trait has 10% population. It is clearly seen that A trait has less population than B trait. B traits have arisen earlier because of the higher population than A trait, i.e, 60%. And the A trait has 10% population which is less, it means that it has arisen some time ago in the environment.
More Questions From Class 10 Science - Chapter Heredity and Evolution
- Q:-
Outline a project which aims to find the dominant coat colour in dogs.
- Q:-
How is the sex of the child determined in human beings?
- Q:-
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
- Q:-
How do Mendel’s experiments show that traits are inherited independently?
- Q:-
Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?
- Q:-
Explain the terms analogous and homologous organs with examples.
- Q:-
How do Mendel’s experiments show that traits may be dominant or recessive?
- Q:-
How does the creation of variations in a species promote survival?
- Q:-
Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually? Why or why not?
- Q:-
Why are traits acquired during the life-time of an individual not inherited?
Popular Questions of Class 10 Science
- Q:-
Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.
- Q:-
What is a good source of energy?
- Q:-
Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?
- Q:-
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
- Q:-
What changes can you make in your habits to become more environment-friendly?
- Q:-
What is the difference between a reflex action and walking?
- Q:-
What is the importance of DNA copying in reproduction?
- Q:-
Why should a magnesium ribbon be cleared before burning in air?
- Q:-
Define the principal focus of a concave mirror.
- Q:-
You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Recently Viewed Questions of Class 10 Science
- Q:-
What is the difference between a reflex action and walking?
- Q:-
What is the importance of DNA copying in reproduction?
- Q:-
Calculate the number of electrons constituting one coulomb of charge.
- Q:-
Why does menstruation occur?
- Q:-
What are the necessary conditions for autotrophic nutrition and what are its by-products?
- Q:-
How is oxygen and carbon dioxide transported in human beings?
- Q:-
Name two energy sources that you would consider to be renewable. Give reasons for your choices.
- Q:-
How is the amount of urine produced regulated?
- Q:-
You are given kerosene, turpentine and water. In which of these does the light travel fastest? Use the information given in Table 10.3.
Material
mediumRefractive
indexMaterial
mediumRefractive
indexAir 1.0003 Canada
Balsam1.53 Ice 1.31 Water 1.33 Rock salt 1.54 Alcohol 1.36 Kerosene 1.44 Carbon
disulphide1.63 Fused
quartz1.46 Turpentine
oil1.47 Ruby 1.71 Benzene 1.50 Sapphire 1.77 Crown
glass1.52 Diamond 2.42 - Q:-
Why should curd and sour substances not be kept in brass and copper vessels?
- All Chapters Of Class 10 Science
- All Subjects Of Class 10