HEREDITY
LINKAGE MAPPING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Independent assortment failed to occur
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Segregation failed to occur
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There was some error in data analysis, the progeny of a test cross are always 1:1
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This is because of a lethal gene influence
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Detailed explanation-1: -A classic Mendelian example of independent assortment: the 9:3:3:1 phenotypic ratio associated with a dihybrid cross (BbEe × BbEe).
Detailed explanation-2: -In the monohybrid cross, a testcross of a heterozygous individual resulted in a 1:1 ratio.
Detailed explanation-3: -The physical basis for the law of independent assortment lies in meiosis I of gamete formation, when homologous pairs line up in random orientations at the middle of the cell as they prepare to separate.
Detailed explanation-4: -Independent assortment takes place during the process of meiosis. In this process, the chromosomes are halved and are known as haploid. To understand the law of independent assortment, it is very important to understand the law of segregation. In this, two different genes are sorted into different gamete cells.