Chapter 5 Erick Mejia

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Recombination DNA

produced by combining DNA from different sources; a product of genetic engineering

Heredity

the transmission of traits from one generation to the next

genetic engineering

The direct manipulation of genes for practical purposes.

Genetics

The scientific study of heredity

sicle cell

a genitic disoder

gene therapy

a technique that places a gene into a cell to correct a hereditary disease or to improve the genome

Punnett Square

diagram showing the gene combinations that might result from a genetic cross

sex-linked gene

gene located on the X or Y chromosome

Hetrozygous

having two different alleles for a trait

Genetics disorders

inherited from parents

Recessive

trait of an organism that can be masked by the dominant form of a trait

incomplete dominance

A pattern of inheritance in which two alleles, inherited from the parents, are neither dominant nor recessive. The resulting offspring have a phenotype that is a blending of the parental traits.

diabetes

A condition in which the body is unable to produce enough insulin, the hormone required for the metabolism of sugar

dominant trait

A genetic trait is considered dominant if it is expressed in a person who has only one copy of the gene associated with the trait.

Probability

A number that describes how likely it is that an event will occur

Purebred

An organism that always produces offspring with the same form of a trait as the parent.

Hybrid

An organism that has two different alleles for a trait

Genotype

An organism's genetic makeup, or allele combinations.

Phenotype

An organism's physical appearance, or visible traits.

Allele

Different forms of a gene

Gregor Mendel

Father of genetics

Homozygous

Having two identical alleles for a particular gene


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