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Heredity

chapter 5 vocabulary

TermDefinition
Heredity The passing of traits from parent to offspring.
Alleles An alternate from that a gene may have for a single trait; can be dominat or recessive
Genetics The study of how traits are inherited through the actions of alleles.
Hybrid An offspring that was given different genetic information for a trait from each parent.
Dominant Describes a trait that covers one, or dominates, another form of that trait.
Recessive Describes a trait that is covered over, or dominated by another form of that trait and seems to disapper.
Punnett Square A tool to predict the erobability of certain traits in offspring that shows the different ways alleles can combine.
Genotype The genetic makeup of an organism.
Phenotype Outward physical appelaince and behavior of an organism as a result or its genotype.
Homozygous Describes an organism with two alleles that are the same for a trait.
Heterozygous Describes an organism with two different alleles for a trait.
Incomplete dominance Production of phenotype that is intermediate between the two homozygous parents
Polygenic inheritance Occurs when a group of gene pairs act together and produces a specific trait, such as human eye color, skin color, or height.
Sex-linked gene An allele inherited on sex chromosome and that can cause human genetic disorders such as color blindness and hemophilia.
Genetic engineering Biological and chemical methods to change the arrangement of a gene' DNA to medicine, and change how cells perform their normal functions.
Trait A trait is a characteristic or attribute of an organism that is expressed by genes and/or influenced by the environment.
Created by: 21.emma.hull
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