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Science Vocabulary

Across
Atom with fewer or more neutrons than protons.
Physical appearance for a trait, determined by a gene.
The second stage of cell division where the nucleus divides in a four-part sequence.
Theory explaining the relationship between cells and living things.
The main part of chromosomes that carries genetic information of an organism.
The study of how genes are turned off and on.
Down
Microorganisms or viruses that cause disease.
Molecule in the nucleus of a cell that is mostly made of DNA and has all parts of the genetic material.
The process of a parent cell dividing into two identical daughter cells.
A charged particle resulting from an imbalance of protons and electrons in an atom.
A special type of cell division that produces reproductive cells.
Protein molecules inside cells taht help chemical reactions happen faster.