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Genetics 19-20

Name ___________________________________

Period _____                                                    #_____
Across
The passage of traits from parents to offspring
Pattern of inheritance with more than two alleles
Blood disorder that causes clumping of blood in blood vessels, pain, and impaired blood flow
Concept that genes are carried by chromosomes from one generation to the next
This allele prevents the expression of the other form of the trait
Physical appearance that passes from parents to offspring
This rule states an organism dominant for one trait does not have to be dominant for all traits
The physical appearance determined by the genotype
Traits that a determined by genes on the X chromosome
Example of a disorder caused by nondisjunction
Pairs of factors that are passed from one generation to the next
This allele can only be expressed when their are two genes are present
Tool used to predict possible offspring of a cross between parents
Down
Different forms a gene can take
Having two identical alleles for a trait
Pattern of inheritance where one allele is only partially dominant over the other allele
This law states that one gene in a pair prevents the expression of the other gene
Combination of alleles
Pattern of inheritance where more than two alleles exist for the gene
Example of a disorder caused by sex-linked trait, usually affects men
Occurs when homologous chromosomes do not separate during meiosis
Blood disorder in which blood does not clot properly
Punnett square problems with one pair of contrasting traits
Chart used to show the relationships within a family
Study of laws of chance
Study of heredity
Organism that receives half of its DNA from each parent