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Mathematical Calculation of Mendelian Analysis MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

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  • 12 Questions around this concept.

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 F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are the same as 1:2:1.  this ratio represents in case of 
 

On crossing two heterozygous tall plants (Tt), a total of 500 plants were obtained in the F1 generation. What will be the respective number of tall and dwarf plants obtained in the F1 generation?

In a monohybrid cross between two pea plants, one with a homozygous dominant genotype (AA) and the other with a heterozygous genotype (Aa), what is the expected genotypic ratio of the offspring?

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in a dihybrid cross between two heterozygous parents (AaBb AaBb), what is the probability of obtaining an offspring with the genotype AABb?

Some of the dominant traits studied by Mendel were

 

Concepts Covered - 1

Mathematical Calculation of Mendelian Analysis
  • To calculate the number of gametes that would be formed in a given genotype = 2n; where n = number of heterozygous genes.
  • To calculate the number of possible genotypes in a given progeny = 3n; where n = type of cross.
  • To calculate the frequency of least common genotype in a given progeny = (1/4)n; where n = type of cross.
  • To calculate the frequency of different phenotypes in a given progeny = 2n; where n = type of cross.
  • To calculate the phenotypic ratio of a particular cross = (3 : 1)n; where n = type of cross. 
  • To calculate genotypic ratio of a particular cross = (1 : 2 : 1)n; where n = type of cross. 
  • To calculate the total number of progeny = (4)n; where n = type of cross. 

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