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Earn 100

Match the following:

  Karyotype of Drosophila   Sex
A) AA+XX I)  Metafemale
B) AA+XO II)  Female
C)  AA+XXX III) Intersex 
D) AAA + XXY IV) Metamale
    V)  Male

The correct match is

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Important Questions on Principles of Inheritance and Variation

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In which of the organism, the following type of sex determination is possible

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Study the following regarding genic balance theory of sex determination in Drosophila
I. Organism with AAA XXX is fertile triploid female
II. Organism with AAA XXY is fertile triploid male
III. Organism with AAA XX is an intersex
IV. Organism with AA XXY is metafemale
Which of the above are correct?
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Assertion (A): In human beings, the sex of the offspring depends on the type of sperm that fertilizes the ovum
Reason (R): Human males are heterogametic
The correct option among the following is
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In a dihybrid cross between genes yellow, white and miniature characters, the parental % between yellow and white and recombination % is 92 and 8 respectively, and the cross between white and miniature characters, the recombination is 38% and parental is 62%. Identify the genetic map of these.
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Statement I : All the three types of allosomal genes - X linked, Y linked and XY linked are present only in male human being.
Statement II : Only X linked and not XY linked genes are present in female human being.

The correct option among the following is

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Statement (S): The heterozygous individuals for sickle-cell anaemia HbAHbS express disease phenotype and also carriers of the disease.

Reason (R): HbAHbS genotype individuals are resistant to severe effects of malaria.

The correct answer is

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A change of single base pair in the gene for beta globin chain (in human haemoglobin) that results in the change of amino acid residue glutamine to valine which is due to