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Inheritance and Variation — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYInheritance and Variation4 Marks
Question
Widow’s peak.
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Answer

  1. Widow’s peak is a prominent ‘V’ shaped hairline on forehead.
  2. It is due to autosomal dominant gene.
  3. Widow’s peak occurs in homozygous dominant (WW) and also heterozygous (Ww) individuals.
  4. Individuals with homozygous recessive (ww) genotype do not have widow’s peak but have a straight hair line.
  5. Both males and females have equal chance of inheritance.

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