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Chromosomes

Strength of l...

Question

Strength of linkage is indirectly proportional to

A

Distance between genes

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B

Number of chromosomes in the organism

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C

Synapsis

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D

Chiasma formation

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Solution

The correct option is A
Distance between genes

Linked genes sit close together on a chromosome, making them likely to be inherited together. Genes on separate chromosomes are never linked. But not all genes on a chromosome are linked. Genes that are farther away from each other are more likely to be separated during a process called homologous recombination. So, strength of linkage depends on the distance between genes.

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Similar questions

Q. How many of the following statements are correct?
Statement I: Recombination of genes is directly proportional to the strength of linkage.
Statement II: Recombination of genes is inversely proportional to the strength of linkage.
Statement III: More the distance between the two genes on a chromosome, less the strength of linkage.
Statement IV: More the distance between the two genes on a chromosome, more the strength of linkage.
Statement V: Recombination frequency is inversely proportional to the distance between the genes present on a chromosome.

Q. How many of the following statements are wrong?
Statement I: Strength of linkage is directly proportional to the recombination of genes.
Statement II: Recombination of genes is inversely proportional to the strength of linkage.
Statement III: More the distance between the two genes on a
chromosome, less will be the strength of linkage.
Statement IV: More the distance between the two genes on a
chromosome, more the strength of linkage.
Statement V: Recombination frequency is inversely proportional to the distance between the genes present on a chromosome.

Q. The distance between A and B genes is too long on a chromosome, the strength of linkage between them is

Q. Depending upon the distance between any two genes which is inversely proportional to the strength of linkage, cross overs will vary from

Q. Consider the following statements (A D) and select the correct option stating ones are true (T) and false (F)?
A. Genes located on different chromosomes always show linkage.
B. Homologous non-sister chromatids participate in crossing over during gamete formation.
C. The frequency of crossing over between any two genes is generally proportional to the distance between them on the chromosome
D. Two non-sister chromatids participating in crossing over at any given point will lead to the formation of one type of gamete.

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