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Ch. 19 Lesson 3

Across
______ are often used to insert new genes during gene therapy.
Genetic disorders cannot be _____ they can only be treated.
Genes are the basic unit of _____.
Genetic counselors guide families about the ________ of having a child with a genetic disorder.
__________ are made up of thousands of genes.
There are ____ ways to test for genetic disorders before the baby is born.
________ genes generally only appear when dominant genes are not present.
_______ reproductive cells contain only X chromosomes.
Tay-sachs disease destroys the ______ system.
Nuclei are the cell's ______ center.
Some genetic disorders are apparent at ____. It others don't present themselves until later in life.
Environment can ______ inherited traits.
Down
Cystic fibrosis results in a _____ clot in organs.
The passing of traits from parents to children is called _____.
______ is the failure of blood to clot.
Gene maps can be used to diagnose genetic _______.
_______ are used by genes to make tissues.
Each ______ code is unique.
______ cells contain 23 chromosomes.
At least 1 gene is responsible for each human _____.
All _____ things are made up of DNA