Biology Ch 12.2 Word Scramble
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Term | Definition |
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 |
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