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7.17 Mrs Jensen
Heredity
16
Science
7th Grade
09/14/2011

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Term
heredity

7.17
Definition
the passing of traits from parent to offspring
Term
alleles

7.17
Definition
different forms a gene may have for a trait
Term
genetics

7.17
Definition
the study of how traits are inherited through the actions of alleles
Term
dominant

7.17
Definition
describes a trait that covers up, or dominates, another form of the trait
Term
recessive

7.17
Definition
describes a trait that is covered up, or dominated, by another form of the trait
Term
Punnett square

7.17
Definition
a tool used to predict results in Mendelian genetics
Term
genotype

7.17
Definition
the genetic makeup of an organism
Term
homozygous

7.17
Definition
an organism that has two identical alleles for a single trait
Term
heterozygous

7.17
Definition
an organism that has two different alleles for a single trait
Term
phenotype

7.17
Definition
the physical expression of a particular genotype
Term
incomplete dominance

7.17
Definition
the production of a phenotype that is intermediate to those of the two homozygous parents
Term
multiple alleles

7.17
Definition
the term used when a trait is controlled by more than two alleles
Term
polygenic inheritance

7.17
Definition
occurs when a group of gene pairs acts together to produce a single trait
Term
sex-linked gene

7.17
Definition
an allele inherited on a sex chromosome
Term
pedigree

7.17
Definition
a tool that shows the occurrence of a trait in a family
Term
genetic engineering

7.17
Definition
the changing of a gene's DNA sequence by biological and chemical methods
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