MEDIUM
Earn 100

Read the following statements and state true (T) or False (F):

A. T. H. Morgan worked with tiny fruit flies Drosophila melanogaster.

B. Morgan studied genes that were sex linked.

C. Morgan observed that two genes did not segregate independently of each other and undefined ratio was deviated from undefined

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Important Questions on Inheritance and Variation

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Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
What is sex linkage?
MEDIUM
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over

Assertion (A): The proportion of parental gene combinations was much lighter than non-parental type

Reason (R): Gene combination is due to linkage of the two genes

EASY
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over

Give one significant difference between the following:

Linkage and crossing over

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Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
"Complete linkage is rare" explain it with a suitable example.
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Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
Two genetic loci controlling two different traits two different traits are linked. During the inheritance of these traits, the Mendelian laws that would be affected is/are:
EASY
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
Define ‘linkage’.
HARD
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
How did Sturtevant explain gene mapping while working with Morgan?
MEDIUM
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over

Given below are two statements one is labelled as: Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Mendel's law of independent assortments does not hold good for the genes that are located closely on the same chromosome.

Reason (R): Closely located genes assort independently.

In light of the above statements, choose the correct answer from the options given below:

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Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
With increasing age, the linkage ___.
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Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
Identify the event in meiosis mediated by the enzyme recombinase.
EASY
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
What are the conclusions drawn by T.H. Morgan from the crossing experiments in Drosophila with respect to linkage?
HARD
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates:
MEDIUM
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
Which of the following is not a characteristic of Drosophila melanogaster?
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Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
Write differences between linkage and crossing over.
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Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
Identify the incorrect statement from the following.
EASY
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
The frequency of recombination between gene pairs on the same chromosome as a measure of the distance gene was explained by:
EASY
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
What map unit (Centimorgan) is adopted in the construction of genetic maps?
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Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
Alkaptonuria (aa) is which type of error?
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Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
Select the correct statement.
EASY
Biology>Genetics and Evolution>Inheritance and Variation>Linkage and Crossing Over
The term ''linkage'' was coined by: