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Biology Ch 12.2

Ch.12 vocab

TermDefinition
Pedigree is a diagram that shows how a trait is inherited over several generations
Carrier individuals that have one copy of the recessive allele but do not have the disease
Genetic disorder are diseases or disabling conditions that have a genetic basis
Polygenic characters: they are influenced by several genes. shows many degrees of variation
Complex character characters that are influenced strongly both by the environment and by genes
Multiple allele genes with three or more alleles
Codominance both alleles are expressed in the phenotype of a heterozygote
Incomplete dominance an individual displays a trait that is intermediate between the two parents
Sex-influenced trait an autosomal trait that is influenced by the presence of male or female sex hormones
Huntington's disease is an autosomal dominant condition characterized by forgetfulness and irritability
Amniocentesis allows a physician to remove some amniotic fluid from the amnion the sac that surrounds the fetus between the 14th and 16th week of pregnancy
Chorionic villi sampling the physician takes a sample of the chorionic villi cells derived from the zygote that grow between the mother's uterus and the placenta between the 8th and 10th week
Genetic counseling the process of informing a person or couple about their genetic makeup. is a form of medical guidance that informs individuals about problems that might affect their offspring
Gene therapy is a technique that places a healthy copy of a gene into the cells of a person whose copy of the gene is defective
Created by: SchmidtE20
 

 



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