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Question
What did the monohybrid and dihybrid experiments performed by Mendel prove? What laws were formulated on the basis of his observations?
What did the monohybrid and dihybrid experiments performed by Mendel prove? What laws were formulated on the basis of his observations?
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Solution
Monohybrid cross: Monohybrid cross is a cross of two individuals with different alleles of a single trait.
Eg:-Mendel crossed pure tall plant with pure dwarf plant. He expected plants of intermediate height, in F1 generation but to his surprise all the plants were tall.
Dihybrid cross: Dihybrid cross is a cross of two individual differing in two different contrasting pair of character.
Eg: crossing of Mendel with with green pod colour (GG) and yellow seed colour (YY), resulting in the formation of offspring which were heterozygous for green pod colour and yellow seeds (GgYy).
From Monohybrid experiment : Law of Dominance, Law of Segregation.
From Dihybrid cross: Law of Independent Assortment.
Eg:-Mendel crossed pure tall plant with pure dwarf plant. He expected plants of intermediate height, in F1 generation but to his surprise all the plants were tall.
Dihybrid cross: Dihybrid cross is a cross of two individual differing in two different contrasting pair of character.
Eg: crossing of Mendel with with green pod colour (GG) and yellow seed colour (YY), resulting in the formation of offspring which were heterozygous for green pod colour and yellow seeds (GgYy).
From Monohybrid experiment : Law of Dominance, Law of Segregation.
From Dihybrid cross: Law of Independent Assortment.
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