Question

Explain holoblastic segmentation.
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Answer 1

Answer:

The amount and distribution of yolk in the egg also influence the mode of division. The daughter cells formed by the divisions of the zygote are known as blastomeres. The small blastomeres are called micromeres and the large ones macromeres. As a rule, the micromeres are formed in the animal pole and the macromeres in the vegetal pole.



The plane of division of the zy­gote:

The early cleavage takes place along a predestined plane, which differs in different groups of animals

Explanation:

The amount and distribution of yolk in the egg also influence the mode of division. The daughter cells formed by the divisions of the zygote are known as blastomeres. The small blastomeres are called micromeres and the large ones macromeres. As a rule, the micromeres are formed in the animal pole and the macromeres in the vegetal pole.



The plane of division of the zy­gote:

The early cleavage takes place along a predestined plane, which differs in different groups of animals