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    science
    Grade-10
    Easy

    Question

    Emily has brown hair.
    Which Statement most likely explains why Emily has brown hair?

    1. Emily’s favorite color is brown.
    2. Emily has a parent with brown hair
    3. Emily’s older brother has brown hair.
    4. Emily's parents do not have brown hair

    Hint:

    Hair color is expressed by a gene.

    The correct answer is: Emily has a parent with brown hair

      Gene is a segment of DNA that codes for a particular trait or character of an individual.
      After fertilization, a diploid zygote is formed by the fusion of haploid gametes. The offspring, thus receives 50% of chromosome from each parent. The combined effect of the genes will help in the expression of a unique trait in the offspring.
      Color of hair is determined by the genes inherited from the parent. Natural color of hair does not depend upon the choice of the individual or of the siblings.

      • Gene is the unit of heredity
      • Expression of gene is observed as traits like hair color, blood group, etc

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