Question

Cleavage is a unique form of mitotic cell division in that

• A. The nucleus does not participate
• B. No spindle develops to guide the chromosomes
• C. The plasma membranes of daughter cells do not separate
• D. There is no growth of cells

Answer 1

The correct option is D There is no growth of cells

In embryology, cleavage is the division of cells in the early embryo. The process follows fertilization, with the transfer being triggered by the activation of a cyclin-dependent kinase complex. The zygotes of many species undergo rapid cell cycles with no significant overall growth, producing a cluster of cells the same size as the original zygote. The different cells derived from cleavage are called blastomeres and form a compact mass called the morula. Cleavage ends with the formation of the blastula.

So the correct option is 'there is no growth of cells'.