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In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because
[2003]
- a)they can be studied from the samples of fossil remains
- b)they are small, and therefore, easy to study
- c)they are uniparental in origin and do not take part in recombination
- d)their structure is known in greater detail
Correct answer is option 'C'. Can you explain this answer?
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In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y c...
Uniparental Inheritance and Recombination:
- mt-DNA (mitochondrial DNA) and Y chromosomes are considered for the study of human evolution because they are uniparental in origin and do not take part in recombination.
- In humans, mt-DNA is inherited exclusively from the mother, while Y chromosomes are inherited exclusively from the father.
- Uniparental inheritance means that these genetic materials are passed down from generation to generation without mixing with genetic material from the other parent.
- This is in contrast to other parts of the genome, such as autosomal DNA, which undergo recombination, where genetic material from both parents is combined and shuffled during the formation of sperm and eggs.
Advantages of Uniparental Inheritance:
1. Genetic Lineage Tracing:
- Uniparental inheritance allows for the tracing of specific genetic lineages.
- For example, by studying mt-DNA, researchers can trace maternal lineages and understand the migration patterns and evolutionary history of populations.
- Similarly, by studying Y chromosomes, paternal lineages can be traced.
- This provides valuable insights into human migration, population genetics, and evolutionary relationships.
2. Conserved Structure:
- mt-DNA and Y chromosomes have a conserved structure, meaning that their sequences change at a relatively slow rate over time.
- This allows researchers to compare DNA sequences from different individuals or populations and infer their genetic relatedness and evolutionary history.
- The conserved structure of these genetic materials makes them suitable for studying deep human evolutionary relationships and ancient DNA samples, such as those obtained from fossil remains.
3. Ease of Study:
- Both mt-DNA and Y chromosomes are relatively small in size compared to the entire genome.
- This makes them easier to study and analyze compared to the larger autosomal DNA.
- The smaller size facilitates DNA sequencing, genetic analysis, and comparison of sequences from different individuals or populations.
Conclusion:
- The uniparental inheritance and lack of recombination make mt-DNA and Y chromosomes valuable tools for studying human evolution.
- Their conserved structure, ease of study, and the ability to trace specific genetic lineages provide important insights into our evolutionary history and population genetics.
- mt-DNA (mitochondrial DNA) and Y chromosomes are considered for the study of human evolution because they are uniparental in origin and do not take part in recombination.
- In humans, mt-DNA is inherited exclusively from the mother, while Y chromosomes are inherited exclusively from the father.
- Uniparental inheritance means that these genetic materials are passed down from generation to generation without mixing with genetic material from the other parent.
- This is in contrast to other parts of the genome, such as autosomal DNA, which undergo recombination, where genetic material from both parents is combined and shuffled during the formation of sperm and eggs.
Advantages of Uniparental Inheritance:
1. Genetic Lineage Tracing:
- Uniparental inheritance allows for the tracing of specific genetic lineages.
- For example, by studying mt-DNA, researchers can trace maternal lineages and understand the migration patterns and evolutionary history of populations.
- Similarly, by studying Y chromosomes, paternal lineages can be traced.
- This provides valuable insights into human migration, population genetics, and evolutionary relationships.
2. Conserved Structure:
- mt-DNA and Y chromosomes have a conserved structure, meaning that their sequences change at a relatively slow rate over time.
- This allows researchers to compare DNA sequences from different individuals or populations and infer their genetic relatedness and evolutionary history.
- The conserved structure of these genetic materials makes them suitable for studying deep human evolutionary relationships and ancient DNA samples, such as those obtained from fossil remains.
3. Ease of Study:
- Both mt-DNA and Y chromosomes are relatively small in size compared to the entire genome.
- This makes them easier to study and analyze compared to the larger autosomal DNA.
- The smaller size facilitates DNA sequencing, genetic analysis, and comparison of sequences from different individuals or populations.
Conclusion:
- The uniparental inheritance and lack of recombination make mt-DNA and Y chromosomes valuable tools for studying human evolution.
- Their conserved structure, ease of study, and the ability to trace specific genetic lineages provide important insights into our evolutionary history and population genetics.
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In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y c...
Because they are uniparent, they do not undergo recombination. so whatever change is in them, it can be only due to mutation.A father and a son is most likely to have a similar Y chromosome.This uniparent characteristic of Y chromosome helps in studying the human evolution
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In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer?
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In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer?.
In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer?.
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In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because[2003]a)they can be studied from the samples of fossil remainsb)they are small, and therefore, easy to studyc)they are uniparental in origin and do not take part in recombinationd)their structure is known in greater detailCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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