Question

In humans,the allele for red hairs b,is recessive to the allele for brown hairs,B.A man and his wife both have brown hair.They have five children ,three of whom have have red hairs,while two have brown hair.Explain how this may happen,using a genetic diagram to explain your answer.
Please answer this question.

Answer 1

red hair occurs due to genetic structure and arrangement of bonds in them. we know that the character which is recessive in F₁ generation it will be a dominant in  F₂ generation. so if any of the parents of a man and a woman have red hair this allele will become dominant in F₂ generation as it is recessive in F₁ GENERATION. so the three children will get red hair.