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8 terms

Biology 1 chapter 12

Biology 1 Chapter 12
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codominance
A condition in which neither of two alleles of a gene is dominant or recessive., A condition in which both alleles for a gene are fully expressed
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.
polygenic inheritance
combined effect of two or more genes on a single character
carrier
A person whose genotype includes a gene that is not expressed in the phenotype.
phenotype
An organism's physical appearance, or visible traits. How you look IE: hair color, eye color, etc
karyotype
A picture of all the chromosomes in a cell arranged in pairs
pedigree
A chart or "family tree" that tracks which members of a family have a particular trait
what are some sex linked genetic problems
colorblindness, muscular distrophy, hemophilia, Color blindness and hemophilia. Males only have one X chromosomes, males are likely to have these conditions. Only females can be carriers. The cause of hemophilia are sex-linked recessive allele on the X chromosomesm, the symptoms of hemophilia are that the blood clots slowly or not at all, and therapy of hemophilia is blood clotting protien produced by cows.