The male parent of a cross has a mutation in one of the mitochondrial genes- During segregation of F 2 progenies- that mutation will be found inA- one third of the progeniesB- all the progeniesC- none of the progeniesD- fifty percent of the progenies

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Trisomy X and Other Conditions

The male pare...

Question

The male parent of a cross has a mutation in one of the mitochondrial genes. During segregation of $F_{2}$ progenies, that mutation will be found in

one third of the progenies

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none of the progenies

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all the progenies

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fifty percent of the progenies

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Solution

The correct option is B none of the progenies
Mutation is in the male parent. Mitochondria of sperms are left behind during fertilization and hence the mitochondria of the progeny is completely of maternal origin (from the mother). So, none of the progeny will inherit the mutation.

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A common test to find the genotype of a hybrid is by

(a)crossing one of the F₂ progeny with male parent.

(b)crossing one of the F₂ progeny with female parent

(c)studying the sexual behaviour of F₁progenies

(d)crossing of one F₁progeny with male parent

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The male parent of a cross has a mutation in one of the mitochondrial genes. During segregation of F2 progenies, that mutation will be found in

The correct option is B none of the progenies Mutation is in the male parent. Mitochondria of sperms are left behind during fertilization and hence the mitochondria of the progeny is completely of maternal origin (from the mother). So, none of the progeny will inherit the mutation.

The male parent of a cross has a mutation in one of the mitochondrial genes. During segregation of $F_{2}$ progenies, that mutation will be found in

The correct option is B none of the progenies
Mutation is in the male parent. Mitochondria of sperms are left behind during fertilization and hence the mitochondria of the progeny is completely of maternal origin (from the mother). So, none of the progeny will inherit the mutation.