Linkage, Crossing Over and Multiple Alleles

IMPORTANT

Linkage, Crossing Over and Multiple Alleles: Overview

This Topic covers sub-topics such as Crossing Over, Genetic Mapping, Self-incompatibility, Recombination of Genes, Incomplete Linkage, Complete Linkage, Recombination Frequency, Mechanism of Crossing Over, Linkage Groups and, Types of Crossing Over

Important Questions on Linkage, Crossing Over and Multiple Alleles

HARD
IMPORTANT

Which of the following is not the cause of variations among siblings?

HARD
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Mendel's laws of inheritance is different if the characters that he choose were located on the same chromosome. Discuss.

HARD
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All the genes found on the same chromosome

MEDIUM
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A test cross that uses three genes to determine the distance between the genes is called _____ test cross. (Write in words only)

MEDIUM
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Write the formula for the calculation of recombination frequency.

EASY
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Multiple alleles in plants is observed in tobacco.

EASY
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Explain Holliday's Hybrid DNA Model.

HARD
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A three point test cross uses three genes to determine the order and distance between the genes.

MEDIUM
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Define the term recombination frequency.

EASY
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What are the different types of crossing over?

MEDIUM
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Which of the following are the types of linkage?

EASY
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The genes A and B are 10 cm apart on a chromosome. If an AB/ab hetero zygote is test crossed to ab/ab, how many of each progeny class would you assume out of 100 total progeny?

MEDIUM
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Which of the following are the types of synapsis?

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

Morgan coined the term _____ (crossing over/synapsis).

HARD
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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)

EASY
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DNA recombination was first proposed by Robin Holiday.

MEDIUM
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The unit of distance in a genetic map is called chromosomal unit.

MEDIUM
IMPORTANT

Which of the following sentences are correct?