Which mammals have more yolk than cytoplasm i | vedclass

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(D) The egg-laying mammals,also known as $Prototherians$ (e.g.,$Platypus$ and $Echidna$),possess $macrolecithal$ or $polylecithal$ eggs. In these eggs

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Egg-laying mammals

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(D) The egg-laying mammals,also known as $Prototherians$ (e.g.,$Platypus$ and $Echidna$),possess $macrolecithal$ or $polylecithal$ eggs. In these eggs,the amount of yolk is significantly greater than the amount of cytoplasm,which is a characteristic feature of birds and reptiles as well. Placental mammals and marsupials produce $microlecithal$ or $alecithal$ eggs,where the yolk content is minimal.

Which mammals have more yolk than cytoplasm in their eggs?

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