HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a monohybrid cross is performed for one generation, wheres a dihybrid cross is performed for two generations
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a dihybrid cross involves organisms that are heterozygous for two characters and a monohybrid only one
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a monohybrid cross results in a 9:3:3:1 ratio whereas a dihybrid cross gives a 3:1 ratio
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a monohybrid cross involves a single parents, whereas a dihybrid cross involves two parents
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Detailed explanation-1: -A monohybrid cross involves a single parent, whereas a dihybrid cross involves two parents. A dihybrid cross involves organisms that are heterozygous for two characters that are being studied, and a monohybrid cross involves organisms that are heterozygous for only one character being studied.
Detailed explanation-2: -A monohybrid cross is defined as the cross happening in the F1 generation offspring of parents differing in one trait only. A dihybrid cross is a cross happens F1 generation offspring of differing in two traits.
Detailed explanation-3: -Parents of the dihybrid cross differ in two traits. If the alleles or the genes are not linked, the resulting phenotypic ratio of a monohybrid cross is 3:1 while in a dihybrid cross, it is 9:3:3:1.
Detailed explanation-4: -A monohybrid cross looks at the probability of inheritance for a single gene in a cross involving two heterozygous individuals, hence the term mono, meaning one. A dihybrid cross looks at the probability of inheritance for two genes in a cross that involved two heterozygous individuals, hence the term di, meaning two.
Detailed explanation-5: -For a monohybrid cross (Table below), individual alleles are used, whereas for a dihybrid cross (Table below), pairs of alleles are used. A Punnett square for a monohybrid cross is divided into four squares, whereas a Punnett square for a dihybrid cross is divided into 16 squares.