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Sasser S7L3c

Life Science

TermDefinition
gene one set of instructions for an inherited trait
trait a genetically determined characteristic
inherit something that you have received from parents, grandparents, etc. Redhair, freckles
chromosome in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell, the min ring of DNA
selective breeding the human practice of breeding animals or plants that have certain desired traits
purebred refers to an organism or gene pair that are both the same
genotype the entire makeup of an organism; also the combination of genes for one or more specific traits
genetic cross The deliberate breeding of two different individuals that results in offspring that carry part of the genetic material of each parent. The parent organisms must be genetically compatible and may be from different varieties or closely related species.
probability is used to measure the chances or likelihood of an event to occur
heterozygous refers to a pair of genes where one is dominant and one is recessive — they're different
homozygous Relating to a cell that has two identical alleles for a particular trait at corresponding positions on homologous chromosomes.
Punnett Square a type of grid used to show the gametes of each parent and their possible offspring
true breeding A kind of breeding in which the parents with a particular phenotype produce offspring only with the same phenotype
hybrid the offspring of two animals or plants of different breeds, varieties, species
alleles one of the alternative forms of a gene that governs a characteristic, such as hair color
cloning The process of creating an exact copy of a biological unit
phenotype an organism's appearance or other detectable characteristic
pedigree a diagram that shows the occurence of a genetic trait in several generations of a fmily
mutation a change in the nucleotide-base sequence of a gene or DNA molecule
Created by: bsasser
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