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One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in
[2004]
- a)one-third of the progenies
- b)none of the progenies
- c)all the progenies
- d)fifty percent of the progenies
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
One of the parents of a cross has a mutation in its mitochondria. In t...
Mitochondria is an organelle present in the cytoplasm. A zygote receives its cytoplasm from the female parent gamete. Hence in the given question, the F2 progenies do not receive the mitochondrial genome from the male parent and mutation is not passed to progenies.
Most Upvoted Answer
One of the parents of a cross has a mutation in its mitochondria. In t...
Mitochondrial DNA (mtDNA) is a unique type of DNA found in the mitochondria of cells. It is inherited solely from the mother, as the sperm does not contribute mitochondria to the offspring during fertilization. In this question, one of the parents of a cross has a mutation in its mitochondria, and it is considered as the male parent in the cross.
The F1 progeny will inherit the mitochondria from the mother, who does not have the mutation. Therefore, all the F1 progeny will have normal mitochondria without the mutation.
During the segregation of F2 progeny, there are two possibilities for the presence or absence of the mitochondrial mutation:
1. The mutation segregates randomly: If the segregation of the mitochondrial mutation is random, then the presence or absence of the mutation will depend on chance. In this case, the expected ratio of progenies with the mutation to those without the mutation would be 1:1 or 50% each. However, the correct answer is option 'B', which suggests that none of the progenies have the mutation. This indicates that the segregation of the mitochondrial mutation is not random.
2. The mutation is maternally inherited: If the mitochondrial mutation is exclusively maternally inherited, then none of the progenies will have the mutation. This is because the male parent in the cross has the mutation in its mitochondria, which is not passed on to the offspring.
Based on the given information and the correct answer, it can be concluded that the mitochondrial mutation is maternally inherited and does not segregate or pass on to the F2 progeny. Therefore, none of the progenies have the mutation.
The F1 progeny will inherit the mitochondria from the mother, who does not have the mutation. Therefore, all the F1 progeny will have normal mitochondria without the mutation.
During the segregation of F2 progeny, there are two possibilities for the presence or absence of the mitochondrial mutation:
1. The mutation segregates randomly: If the segregation of the mitochondrial mutation is random, then the presence or absence of the mutation will depend on chance. In this case, the expected ratio of progenies with the mutation to those without the mutation would be 1:1 or 50% each. However, the correct answer is option 'B', which suggests that none of the progenies have the mutation. This indicates that the segregation of the mitochondrial mutation is not random.
2. The mutation is maternally inherited: If the mitochondrial mutation is exclusively maternally inherited, then none of the progenies will have the mutation. This is because the male parent in the cross has the mutation in its mitochondria, which is not passed on to the offspring.
Based on the given information and the correct answer, it can be concluded that the mitochondrial mutation is maternally inherited and does not segregate or pass on to the F2 progeny. Therefore, none of the progenies have the mutation.
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One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer?
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One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer?.
One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer?.
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One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in[2004]a)one-third of the progeniesb)none of the progeniesc)all the progeniesd)fifty percent of the progeniesCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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