A man and a women, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughter and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease?
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If a colour-blind woman marries a normal visioned man, their sons will be |
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Select the correct statement from the ones given below with respect to dihybrid cross |
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A character which is expressed in a hybrid is called |
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How many different kinds of gametes will be produced by a plant having the genotype AABbCC? |
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The inactivated X chromosome is referred to as a _____ body. |
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A polygenic trait is controlled by 3 genes A, B and C. In a cross AaBbCc × AaBbCc, the phenotypic ratio of the offsprings was observed as 1 : 6 : x : 20 : x : 6 : 1. What is the possible value of x? |
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Point mutation involves |
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Which of the following pairs is correctly matched? |
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In Drosophila, the sex is determined by: |
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Which one of the followings is not correct for Huntington disease ________? |
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