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Heredity

TermDefinition
DNA a molecule that is present in all living cells and contains information that determines the traits that a living thing inherits
Chromosomes on of the structures in the nucleus of a eukaryotic cell that's made up of DNA
Cell Cycle the life cycle of the cell
Interphase the period of the cell cycle during which activities such as cell growth occur without signs of cell division
Mitosis the process of cell division in eukaryotic cells
Cytokinesis the division of the cytoplasm of a cell
Homologous Chromosome chromosomes that have the same sequence of genes and the same structure
Meiosis a process in cell division where the number of chromosomes decreases to half the original number by 2 divisions of the nucleus, which results in the production of sex cells
Asexual Reproduction reproduction that does not involve the union of sex cells; one parent produces offspring that are directly identical to the parent
Sexual Reproduction reproduction in which the sex cells from two parents unite to produce offspring that shares traits from both parents
Fertilizer the union of a male and female gamete to form a zygote
Heredity the passing of genetic material from parent to offspring
Gene one set of instructions for an inherited trait
Allele one of the alternative forms of a gene that governs a characteristics, such as hair color
Genotype the entire genetic makeup of an organism; combination of genes for one or more specific traits
Phenotype an organism's appearance or other detectable characteristics
Dominant in genetics, describes an allele that is fully expressed whenever the allele is present in an individual
Recessive describes an allele that will be masked unless the organism is homozygous for the trait
Incomplete Dominance a condition in which two alleles are expressed such that the phenotype of a heterozygous individual is an intermediate of the phenotypes of the two homozygous parents
Codominance a condition in which two alleles are expressed such that the phenotype of a heterozygous individual is the combination of the phenotypes of the two homozygous parents
Punnett Square a graphic used to predict the results of a genetic cross
Probability the likelihood that the possible future event will occur in any given instance of the event
Ratio a comparison of two numbers using division
Pedigree a diagram that shows the occurrence of a genetic trait in several generations of a family
Created by: samantham812