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Honors Bio
Chapters 11 and 14
| Term | Definition |
|---|---|
| allele | one of a number of different forms of a gene |
| autosomes | autosomal chromosome; chromosome that is not a sex chromosome |
| carrier | |
| codominance | situation in which both alleles of a gene contribute to the phenotype of the organism |
| incomplete dominance | situation in which one allele is not completely dominant over another |
| crossing over | process in which homologous chromosomes exchange portions of their chromatids during meiosis |
| monohybrid cross | |
| dihybrid cross | |
| diploid | term used to refer to a cell that contains both sets of homologous chromosomes |
| haploid | term used to refer to a cell that contains only a single set of chromosomes and therefore only a single set genes |
| dominant | one of two alleles that is "stronger" than the other |
| recessive | one of two alleles that is "weaker" than the other |
| Turner's Syndrome | Women's sex organs do not develop at puberty |
| Klineflelter's Syndrome | In males, the extra X chromosome interferes with meiosis and usually prevents these individuals from reproducing |
| genotype | genetic makeup of an organism |
| phenotype | physical characteristics of an organism |
| sex-linked crosses | |
| meiosis | process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell |
| homozygous | term used to refer to chromosomes that each have a corresponding chromosomes from the opposite-sex parent |
| heterozygous | term used to refer to an organism that has two different alleles for the same trait |
| autosomal crosses | |
| hybrid | |
| mutant | |
| karyotype | set of photographs of chromosomes grouped in order in pairs |
| somatic cells | |
| sex-influenced traits | |
| pedigree | chart that shows the relationships within a family |
| steps involved in gene therapy | |
| crossing over | |
| multiple allelism | |
| Sickle cell disease | sickled red blood cells; damage to many tissues |