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

$9 : 3 : 3 : 1$ ratio is modified to $9 : 7$ ratio due to

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(AIPMT-2001)

Codominance is shown by gene controlling

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Identify the type of mutation in given diagram

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_$(B)$_ used the frequency of recombination between gene pairs on the _$(A)$_ as a measure of the distance between genes and mapped their position on the chromosome

$(A) \;\;\quad\;\;(B)$

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The mule is a

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In Drosophila, the sex is determined by

Solution

Similar Questions

$9 : 3 : 3 : 1$ ratio is modified to $9 : 7$ ratio due to

Codominance is shown by gene controlling

Identify the type of mutation in given diagram

___$(B)$___ used the frequency of recombination between gene pairs on the ___$(A)$___ as a measure of the distance between genes and mapped their position on the chromosome $(A) \;\;\quad\;\;(B)$

The mule is a

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_$(B)$_ used the frequency of recombination between gene pairs on the _$(A)$_ as a measure of the distance between genes and mapped their position on the chromosome

$(A) \;\;\quad\;\;(B)$