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In the developmental history of mammalian heart, it is observed that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stage
To which hypothesis can this above cited statement be approximated?
To which hypothesis can this above cited statement be approximated?
- a)Lamarck's principle
- b)Mendelian principle
- c)Biogenetic law
- d)Hardy Weinberg law
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
In the developmental history of mammalian heart, it is observed that i...
Biogenetic law or Recapitulation theory was given by Ernst Haeckel in 1866. It states that 'ontogeny repeats phylogeny'. Ontogeny is the life history of an organism while phylogeny is the evolutionary history of the race of that organism. This means that an organism repeats its ancestral history during its development.
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In the developmental history of mammalian heart, it is observed that i...
Explanation:
The statement provided in the question describes the developmental history of the mammalian heart, which starts with a two-chambered fish-like heart and progresses to a three-chambered frog-like heart and finally to a four-chambered heart. This pattern of heart development follows a principle known as the biogenetic law.
Biogenetic Law:
The biogenetic law, also known as the recapitulation theory or embryological parallelism, was proposed by Ernst Haeckel in the late 19th century. According to this law, the development of an individual organism (ontogeny) recapitulates the evolutionary history of the species (phylogeny). In other words, the stages of embryonic development reflect the developmental stages of ancestral species.
Application to the Mammalian Heart:
The development of the mammalian heart follows the biogenetic law, as observed in the statement provided. Here is how the different stages correspond to the ancestral stages:
1. Two-Chambered Fish-Like Heart:
In fish, the heart consists of two chambers - an atrium and a ventricle. This stage is represented by the first stage mentioned in the statement, which describes a two-chambered heart. This stage reflects the ancestral condition of the heart in fish-like ancestors.
2. Three-Chambered Frog-Like Heart:
In frogs and other amphibians, the heart consists of three chambers - two atria and one ventricle. This stage is represented by the second stage mentioned in the statement, which describes a three-chambered heart. This stage reflects the ancestral condition of the heart in frog-like ancestors.
3. Four-Chambered Stage:
In mammals and birds, the heart consists of four chambers - two atria and two ventricles. This stage is represented by the final stage mentioned in the statement, which describes a four-chambered heart. This stage reflects the advanced condition of the heart in mammalian ancestors.
Conclusion:
Based on the observation that the developmental history of the mammalian heart follows the sequence of a two-chambered fish-like heart, three-chambered frog-like heart, and finally a four-chambered heart, the statement can be approximated to the hypothesis of the biogenetic law. According to this law, the stages of ontogeny (development) recapitulate the stages of phylogeny (evolutionary history).
The statement provided in the question describes the developmental history of the mammalian heart, which starts with a two-chambered fish-like heart and progresses to a three-chambered frog-like heart and finally to a four-chambered heart. This pattern of heart development follows a principle known as the biogenetic law.
Biogenetic Law:
The biogenetic law, also known as the recapitulation theory or embryological parallelism, was proposed by Ernst Haeckel in the late 19th century. According to this law, the development of an individual organism (ontogeny) recapitulates the evolutionary history of the species (phylogeny). In other words, the stages of embryonic development reflect the developmental stages of ancestral species.
Application to the Mammalian Heart:
The development of the mammalian heart follows the biogenetic law, as observed in the statement provided. Here is how the different stages correspond to the ancestral stages:
1. Two-Chambered Fish-Like Heart:
In fish, the heart consists of two chambers - an atrium and a ventricle. This stage is represented by the first stage mentioned in the statement, which describes a two-chambered heart. This stage reflects the ancestral condition of the heart in fish-like ancestors.
2. Three-Chambered Frog-Like Heart:
In frogs and other amphibians, the heart consists of three chambers - two atria and one ventricle. This stage is represented by the second stage mentioned in the statement, which describes a three-chambered heart. This stage reflects the ancestral condition of the heart in frog-like ancestors.
3. Four-Chambered Stage:
In mammals and birds, the heart consists of four chambers - two atria and two ventricles. This stage is represented by the final stage mentioned in the statement, which describes a four-chambered heart. This stage reflects the advanced condition of the heart in mammalian ancestors.
Conclusion:
Based on the observation that the developmental history of the mammalian heart follows the sequence of a two-chambered fish-like heart, three-chambered frog-like heart, and finally a four-chambered heart, the statement can be approximated to the hypothesis of the biogenetic law. According to this law, the stages of ontogeny (development) recapitulate the stages of phylogeny (evolutionary history).
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In the developmental history of mammalian heart, it is observed that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stageTo which hypothesis can this above cited statement be approximated?a)Lamarcks principleb)Mendelian principlec)Biogenetic lawd)Hardy Weinberg lawCorrect answer is option 'C'. 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 In the developmental history of mammalian heart, it is observed that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stageTo which hypothesis can this above cited statement be approximated?a)Lamarcks principleb)Mendelian principlec)Biogenetic lawd)Hardy Weinberg lawCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the developmental history of mammalian heart, it is observed that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stageTo which hypothesis can this above cited statement be approximated?a)Lamarcks principleb)Mendelian principlec)Biogenetic lawd)Hardy Weinberg lawCorrect answer is option 'C'. Can you explain this answer?.
In the developmental history of mammalian heart, it is observed that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stageTo which hypothesis can this above cited statement be approximated?a)Lamarcks principleb)Mendelian principlec)Biogenetic lawd)Hardy Weinberg lawCorrect answer is option 'C'. 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 In the developmental history of mammalian heart, it is observed that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stageTo which hypothesis can this above cited statement be approximated?a)Lamarcks principleb)Mendelian principlec)Biogenetic lawd)Hardy Weinberg lawCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the developmental history of mammalian heart, it is observed that it passes through a two chambered fish like heart, three chambered frog like heart and finally four chambered stageTo which hypothesis can this above cited statement be approximated?a)Lamarcks principleb)Mendelian principlec)Biogenetic lawd)Hardy Weinberg lawCorrect answer is option 'C'. Can you explain this answer?.
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