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Module 7: Cellular Reproduction
Words you need to know.
20
Biology
9th Grade
02/15/2012

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Term
Genetics
Definition
The science that studies how characteristics get passed from parent to offspring
Term
Genetic factors
Definition
The general guideline of traits determined by a person's DNA
Term
Environmental factors
Definition
Those "non-biological" factors that are involved in a person's surroundings such as the nature of the person's parents, the person's friends, and the person's behavioral choices
Term
Spiritual factors
Definition
The quality of a person's relationship with God
Term
Gene
Definition
A section of DNA the codes for the production of a protein or a portion of protein, thereby causing a trait
Term
Chromosome
Definition
A strand of DNA coiled around and supported by proteins, found in the nucleus of the cell
Term
Mitosis
Definition
The duplication of a cell's chromosomes to allow daughter cells to receive the exact genetic makeup of the parent cell
Term
Interphase
Definition
The time interval between cellular reproduction
Term
Centromere
Definition
Constricted region of a chromosome and the point at which duplicate DNA strands attach themselves
Term
Mother cell
Definition
A cell ready to begin reproduction, containing duplicate DNA and centriole
Term
Karyotype
Definition
The figure produced when the chromosomes of a species during metaphase are arranged according to size
Term
Diploid cell
Definition
A cell whose chromosomes come in homologous pairs
Term
Haploid cells
Definition
Cells that have only one of each chromosome
Term
Diploid chromosome number (2n)
Definition
The total number of chromosomes in a diploid cell
Term
Haploid chromosome number (n)
Definition
The number of homologous pairs in a diploid cell
Term
Meiosis
Definition
The process by which a diploid (2n) cell forms four gametes (n)
Term
Gametes
Definition
Haploid cells (n) produced by diploid cells (2n) for the purpose of reproduction
Term
Virus
Definition
A non-cellular infectious agent that has two characteristics: it has genetic material inside a protective protein coat, and it cannot reproduce itself
Term
Antibodies
Definition
Specialized proteins that aid in destroying infectious agents
Term
Vaccine
Definition
A weakened or inactive version of a virus that stimulates the body's production of antibodies which can destroy the virus
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