Question
A common test to find the genotype of a hybrid is by:
crossing of one F2 progeny with a male parent
crossing of one F2 progeny with a female parent
studying the sexual behaviour of F1 progenies
crossing of one F1 progeny with a male parent
, to determine the genotype of a hybrid (F1) or any organism showing a dominant phenotype, a test cross is performed. In a typical test cross, the organism is crossed with the recessive parent (double recessive genotype). While the correct scientific definition specifies the 'recessive parent', among the given options, crossing the F1 progeny with a parent (Back Cross) is the methodology described. If the male parent represents the recessive trait in the specific experimental context (or if the option implies a test cross), this allows the analysis of offspring phenotypes to determine the unknown genotype.
This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Principles of Inheritance and Variation. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
More Principles of Inheritance and Variation Questions
Mental retardation in man occurs due to:
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A certain plant homozygous for yellow seeds and red flowers was crossed with a plant homozygous for green seeds and white flowers. The F1 plants had yellow seeds and pink flowers. The F1 plants were selfed to get F2 progeny. Assuming independent assortment of the two characters, how many phenotypic categories are expected for these characters in the F2 generation?
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