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Apologia Biology
Module 7: Cellular Reproduction and DNA
Question | Answer |
---|---|
Genetics | The science that studies how characteristics get passed from parent to offspring |
Genetic factors | The general guideline of traits determined by a person's DNA |
Environmental factors | Those "nonbiological" 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 |
Spiritual factors | The factors in a person's life that are determine by the quality of his or her relationship with God |
Gene | A section of DNA that codes for the production of a protein or a portion of protein, thereby causing a trait |
Messenger RNA | The RNA that performs transcription |
Anticodon | A three-nucleotide base sequence on tRNA |
Codon | A sequence of three nucleotide bases on mRNA that refers to a specific amino acid |
Chromosome | DNA coiled around and supported by proteins, found in the nucleus of the cell |
Mitosis | A process of asexual reproduction in eukaryotic cells |
Interphase | The time interval between cellular reproduction |
Mother cell | A cell ready to begin reproduction, containing duplicated DNA and centrioles |
Centromere | The region that joins two sister chromatids |
Karyotype | The figure produced when the chromosomes of a species during metaphase are arranged according to their homologous pairs |
Diploid cell | A cell with chromosomes that come in homologous pairs |
Haploid cell | A cell that has only one representative of each chromosome pair |
Diploid number (2n) | The total number of chromosomes in a diploid cell |
Haploid number (n) | The number of homologous pairs in a diploid cell |
Meiosis | The process by which a diploid (2n) cell forms gametes (n) |
Gametes | Haploid cells (n) produced by dilpoid cells (2n) for the purpose of sexual reproduction |
Virus | A non-cellular infectious agent that has two characteristics: (1) It has genetic material (RNA or DNA) inside a protective protein coat. (2) It cannot reproduce on its own. |
Antibodies | Specialized proteins that aid in destroying infectious agents |
Vaccine | A weakened or inactive version of a pathogen that stimulates the body's production of antibodies which can aid in destroying the pathogen |