CBSE Class 12-science Biology Chromosomal Theory of Inheritance, Linkage and Recombination, Sex Determination

• how is sex determine in human being
• what do you mean by DNA fingerprinting
• why does recombination occur only in F2 progeny? why not in F1 progeny? also while selfing F1 progeny why are we using different species? if then it will not be considered as selfing
  
• molecular nature of gene
• Significance of  Linkage and crossing over   
• Dihybrid cross produces the following progeny - AaBb-240, Aabb- 754 , aaBb- 746, aabb-260. distance between two genes on the chromosome?
• Is complete linkage shown when heterozygous male and heterozygous female drosophila are crossed?
• What is the trait of this pedigree analysis 
  
• the presence of continuous phenotypic variation in an F2 generatin suggest that a character is inherited by
• multiple answers correct question
  

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