In the developmental history of the mammalian | vedclass

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(A) The observation that the embryonic development of an organism reflects its evolutionary history is known as the Biogenetic law or the theory of re

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Biogenetic law

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(A) The observation that the embryonic development of an organism reflects its evolutionary history is known as the Biogenetic law or the theory of recapitulation,proposed by Ernst Haeckel.This law states that 'ontogeny repeats phylogeny'.In the case of the mammalian heart,the transition from a two-chambered structure (similar to fish) to a three-chambered structure (similar to amphibians) and finally to a four-chambered structure (mammals) serves as an example of this evolutionary recapitulation.

In the developmental history of the mammalian heart,it is observed that it passes through a two-chambered fish-like heart,a three-chambered frog-like heart,and finally a four-chambered stage. To which hypothesis can this above-cited statement be approximated?

Similar Questions

Which of the following is the most acceptable method for determining the age of recent fossils?

Analogous organs are:

$A$: Muscles of external ears are fully developed in humans.
$R$: These muscles help in moving the ear pinna in humans.

Choose the homologous organs from the given options.
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$(II)$ Vertebrate brains.
$(III)$ Thorn and tendrils of Bougainvillea and Cucurbita respectively.
$(IV)$ Vertebrate limbs.
The correct combination is:

Vestigial organs occur as:

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