Linkage and Crossing Over

IMPORTANT

Linkage and Crossing Over: Overview

In this topic, we will learn about linked genes and their types. It briefs on Bateson and Punnett experiment on linkage. It also explains crossing over and its types along with its mechanism and significance.

Important Questions on Linkage and Crossing Over

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What is crossing over? Explain the mechanism of crossing over.

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What is the relation between linkage crossing over and recombination?

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What is molecular mechanism of crossing over?

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What is crossing over and mechanism of crossing over?

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What do you mean by crossing over?

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What is crossing over Slideshare?

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What is crossing over and types of crossing over?

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What is crossing over explain the types?

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What are the different types of crossing over?

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When a group of genes shows linkage then they do not show independent assortment or recombination?

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Fill in the blank with the correct option given in the bracket.

Due to incomplete linkage in maize, the ratio of parental and recombinants are _____.(7:1:1:7/1:2:7:1)

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Which of the following sentences are correct?

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A plant heterozygous for height and flower colour TtRr are selfed and 1600 of the resulting seeds are planted. If the distance between the loci controlling height and the flower colour is 1 centiMorgan (cM), then how many offsprings are expected to be short with white flower ttrr? 

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Crossing over occurs in _____ of prophase-I in meiosis.

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The split-gene arrangement further complicates the definition of a gene in terms of a _____.

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The two _____ of a gene pair are located on homologous sites on homologous chromosomes.

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The percentage of the Fgeneration offspring showing parental character for the body colour and eye colour in Morgan's experiment is:

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Total number of linkage groups in honeybee is __________

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Linkage groups can be separated during __________ in meiosis.

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What will be the number of linkage groups in maize if it has 10 pairs of chromosomes?