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Ch.4
Hemophilia,Colorblindness
23
Science
Not Applicable
01/11/2005

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Cards

Term
Sickle Cell Anemia
Definition
One mutation in a gene causes serious human blood disease.
Term
Sickle Cell Anemia
Definition
Results in red blood cells that are shaped like a cresent moon
Term
allele
Definition
Each member of a gene pair that determines a specific trait
Term
identical
Definition
Come from the same fertilized egg. Look the same
Term
Sex-Influenced Trait
Definition
A trait expressed differently in males than in females
Term
Sex-linked Traits
Definition
traits that are carried on the X chromosome
Term
Amniocentisis
Definition
process that involves the removal of fluids from the sac that surrounds a developing baby
Term
Amnoiocentisis
Definition
used to detect genetic disorders
Term
Hemophilia
Definition
Disorder caused by a sex linked trait
Term
Hemophilia
Definition
also called bleeders disease;blood clots slowly or not at all
Term
Sperm
Definition
Determines the sex of a baby
Term
colorblind
Definition
Sex linked recessive disease
Term
Colorblindness
Definition
cannot tell the difference between certain colors
Term
Multiple Alleles
Definition
three or more alleles in a certain trait
Term
Down Syndrome
Definition
an example of a human karyotype
Term
Down Syndrome
Definition
Has an extra pair of chromosomes in the 21st pair
Term
Down Syndrome
Definition
Trisomy-21
Term
Karyotype
Definition
shows size,number, an shape of all chromosomes in an organism.
Term
Pedigree
Definition
Shows relationships amoung idividuals in a family
Term
Pedigree
Definition
Can be used to find a trait in the family
Term
Trisomy
Definition
A group of three chromosomes
Term
Non disjunction
Definition
Failure of a chromosome pair to seperate during Meiosis.
Term
Non disjunction
Definition
Body cells recieve either more chromosomes or fewer than usual
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