Examlex
In mitosis, ____________________ division(s) produce(s) ____________________ cells, each with the ____________________ number of chromosomes.
Spiral Cleavage
A type of embryonic development in some molluscs and annelids where cells divide in a spiral pattern.
Anterior End
The front part or head end of an organism, usually where sensory organs are concentrated.
Head End
The anterior or front part of an organism, often containing the brain and sensory organs.
Common Ancestor
A hypothetical or actual species from which two or more descendant species evolved.
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