science
Grade-10
Easy

Question

What does variation mean?

  1. A different version of same trait
  2. Changing color
  3. Gene mutation
  4.  Independent assortment of chromosomes

Hint:

No two individual appears same.

The correct answer is: A different version of same trait


    Variation is termed as the difference in genetic make up of two individuals of same species or population. No two human appears identical. This is due to the phenomenon of variation.
    Variation can be observed as difference in skin color, eye color, weight, height and many other physical traits.
    Variation can be discontinuous or continuous.
    Some traits show limited range of variation (eye color, blood group) and they are called discontinuous variation. These variations are due to the genes inherited from the parents.
    Some traits show unlimited range of variation (skin color, height) and are called continuous variation. These variations are due to the combined effects of genes and environment.

    • No two individuals of same population is identical. This is due to variation.
    • Variation causes difference in traits such as height, eye color, skin color and many more
    • Variation can be continuous or discontinuous
    • Variation is due to genes or due to combined influence of genes and environment

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