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Zoology - Principles of Inheritance and Variation Question with Solution | TestHub

ZoologyPrinciples of Inheritance and VariationTest CrossEasy2 minPYQ_2020

ZoologyEasysingle choice

$1 : 1 : 1 : 1$ ratio of progenies can be obtained if the plants employed for crossing are

$(A.)$ $TTRR × ttRR$
$(B.)$ $TtRr × ttrr$
$(C.)$ $TtRR × ttrr$
$(D.)$ $Ttrr × ttRr$

Options:

Answer:

Solution:

$1 : 1 : 1 : 1$ is a dihybrid test cross ratio. It is obtained when crossing is done between a hybrid and a recessive genotype, when two gene loci are considered simultaneously.

Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Principles of Inheritance and VariationSubtopic:Test Cross

⏱ 2mℹ️ Source: PYQ_2020

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