Map distance between genes A and B is 3 units, between B and C 10 units and between C and A 7 units.

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4.Principles of Inheritance and Variation

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The map distance between genes $A$ and $B$ is $3$ units, between $B$ and $C$ $10$ units and between $C$ and $A$ $7$ units. The order of the genes in a linkage map constructed on the above data would perhaps be

$A, B, C$

$A, C, B$

$B, C, A$

$B, A, C$

Solution

(d) From the recombination frequencies between different genes $A, B$ and $C$, it is clear that distance between $A$ and $B$ genes is $3$ units, between $B$ and $C$ $10$ units and $C$ and $A$ $7$ units. Hence linear order of genes on chromosomes is :

Standard 12

Biology

Exchange of genetic material between chromatids of homologous chromosomes during meiosis is called

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(AIPMT-1996)

The chromosome maps are not accurate maps because

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In Drosophila, long wing and broad abdomen characters are dominant over to characters vestigeal wing and narrow abdomen. A pure breeding Drosophila having long wings and broad abdomen is crossed with a pure breeding vestigeal-winged and narrow-abdomened Drosophila. Two of the $F_1$ individuals were crossed and the following results were produced in the $F_2$ generation Long wing, broad abdomen in $482$ Drosophila. Vestigeal wing, narrow abdomen in $154$ Drosophila. Which one of the following is illustrated by these results

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$A$ : Crossing over is exchange of genetic material between non-homologous chromosomes.
$R$ : It produces new linkages.

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Genetic map is one that

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The map distance between genes $A$ and $B$ is $3$ units, between $B$ and $C$ $10$ units and between $C$ and $A$ $7$ units. The order of the genes in a linkage map constructed on the above data would perhaps be

Solution

Similar Questions

Exchange of genetic material between chromatids of homologous chromosomes during meiosis is called

The chromosome maps are not accurate maps because

$A$ : Crossing over is exchange of genetic material between non-homologous chromosomes. $R$ : It produces new linkages.

Genetic map is one that

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$A$ : Crossing over is exchange of genetic material between non-homologous chromosomes.
$R$ : It produces new linkages.