Mendelian Inheritance Pattern (Terms)

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Genetics

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Analysis of inheritance patterns to Id/characterize genes

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Genes

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Bio factors that induce particular traits

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Alleles

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Alternate form of a given gene, inherited from different parents

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Locus

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Location on a chr. often used to refer to the gene at that site

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Dominant

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Allele that ALWAYS determines phenotype

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Recessive

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Allele that only determines phenotype in the absence of a dominant allele

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Mutant

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entity carrying a mutation (allele or an individual)

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Wild Type (3)

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Allele (or indiv) NOT mutated

occurs naturally

Usually dominant

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Genotype

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Combo of alleles in an individual

Ex: Bb (Brown, blue)

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Phenotype

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observable characteristics

ex: Bb = brown eyes

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Homozygous

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carry both copies of the same allele

(BB or bb)

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Heterozygous

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to have different alleles

(Bb)

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Homozygote

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homozygous indiv

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Heterozygote

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heterozygous indiv

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Monohybrid cross

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cross where one gene locus is tracked

Aa x Aa

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Dihybrid cross

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Cross where 2 loci are tracked

AaBb x AaBb

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Trihybrid Cross

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Cross where 3 loci are tracked

AaBbCc x AaBbCc

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F1 (Filial one)

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1st generation produced in a series of crosses

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F2 (Filial two)

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2nd generation produced in a series of crosses

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Independent assortment

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inheritance of alleles at one locus does NOT influence inheritance at other loci

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Sex Chr.

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Sex determining Chr.

( X or Y)

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Autosome

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any chr. except X or Y

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X linked "sex linked"

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a gene located on the X Chr.

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Autosomal

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any gene not located on X, or characteristic not associated with X