1) Name the scientist who proposed the theory of natural selection. 2) Write the expanded form of DNA.
3) Name two human traits which show variation.
4) What type of reproduction give rise to more number of successful variation? Justify 5) What will be the sex of a child who inherits Y Chromosome from his/her father?
6) If a trait A exists in 10% of 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?
7) How does the creation of variations in a species ensure survival?
8) How does Mendel’s experiment show that traits may be dominant or recessive?
9) Do all variations in a particular species have equal chances of survival in an environment?
10) Write difference between Autosomes or Allosomes.
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