In Drosophila, sex is determined by

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4.Principles of Inheritance and Variation

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In Drosophila, the sex is determined by

Whether the egg is fertilized or develops parthenogenetically

The ratio of number of $X$-chromosomes to the sets of autosomes

$X$ and $Y$ chromosomes

The ratio of pairs of $X$-chromosomes to the pairs of autosomes

(AIPMT-2003)

Solution

(b)The ratio of $X$ and $A$ chromosomes responsible for determination of sex in drosophila e.g. Superfemale -Number of $X$ chromosome $XXX$/Set of autosome $AA$. Sex index ratio $(X/A) =\frac{3}{2}= 1.5$ Super female.

Standard 12

Biology

In order to determine whether variations of a character in a population were genetically controlled, the most appropriate procedure will be to

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Some individuals with blood group -$A$ may inherit the genes for blonde hair, while other individuals with blood group -$A$ may the gene for brown hair. This can be best explained by the principle of

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Genetically identical progeny is produced when an individual

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If in a child of $10$ years ages of the intelligence is of $14$ years child, the $I.Q.$ of this child would be

normal

In Cooley's Anemia, the affected chain of a haemoglobin is

normal

In Drosophila, the sex is determined by

Solution

Similar Questions

In order to determine whether variations of a character in a population were genetically controlled, the most appropriate procedure will be to

Some individuals with blood group -$A$ may inherit the genes for blonde hair, while other individuals with blood group -$A$ may the gene for brown hair. This can be best explained by the principle of

Genetically identical progeny is produced when an individual

If in a child of $10$ years ages of the intelligence is of $14$ years child, the $I.Q.$ of this child would be

In Cooley's Anemia, the affected chain of a haemoglobin is

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