Chromosome theory of inheritance
Mendelian genes ave specific loci on chromosomes, and it's the chromosomes that undergo segregation and independent assortment
Normal phenotype for a character (most common in natural populations)
Genes located on the sex chromosome
genes located on the same chromosome
Production of offspring with new combinations of traits inherited from two parents
offspring that inherit a phenotype that matches one of the parental phenotypes
Offspring with new combinations of characters
ordered list of genetic loci along a particular chromosome
genetic map based on recombination frequencies
1% recombination frequency
locate genes with respect to chromosomal features (locations)
compact object (inactive X chromosome condenses to)
occaional mishap, members of homologous chromoses don't move apart properly during meiosis I : sister chromatids don't separate during meiosis II
Offspring having abnormal chromosome number
Chromosome present in triplicate (aneuploid cell)
Chromosome is missing
Chromosmal fragment lacking a centromere is lost during cell division
Fragment becoming attached as an extra segment to a sister chromatid
Chromosomal fragment reattaching to the original chromosome (reverse orientation)
Fragment joins a nonhomologous chromosome
A gene on one chromosome is silenced: allele on homologous chromose is free to be expressed
Fragile X syndrome
Physical appearance of abnormal X chromosome
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