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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 determined 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 a protein, thereby causing a trait.

Messenger RNA
The RNA that performs transcription

Anticodon
A three-nucleotide base sequence on RNA
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 a 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 diploid 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 pathogens 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 help in destroying the pathogen