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Unit 5 Vocabulary
Unit 5 Vocabulary
10
Biology
9th Grade
01/28/2026

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Term
Asexual reproduction
Definition
Process by which offspring are produced by a single parent which results in offspring that are genetically identical to the parent
Term
Sister chromatid
Definition
Duplicated chromosomes that remain attached by the centromere
Term
Chromosome
Definition
Compact structures in the nucleus that contain DNA and histone proteins tightly coiled to ensure that the genetic information gets passed from one generation to the next safely during cell division
Term
Centromere
Definition
Area on a chromosome where spindle fibers attach during mitosis and meiosis
Term
Spindle fibers
Definition
microtubule structures that radiate and attach to the centromere to assist in separating and moving chromatids to the opposite poles of the cell
Term
Centriole
Definition
Paired cellular structures that migrate to opposite poles to aid in separating chromosomes during cellular division
Term
Gamete
Definition
Sex cell
Term
Somatic cell
Definition
Body cells consisting of any type of cell that is NOT a sperm cell or egg cell
Term
Proto-oncogene
Definition
Genes that help cells grow or divide
Term
Tumor suppressor gene
Definition
genes that regulate cell growth, repair DNA, and induce apoptosis (cell suicide) to prevent cancer.
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