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Biologie Kapital 9


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Lizzy Kutten


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[Front]


phenotype
[Back]


display of a particular version of a genetic trait

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Biologie Kapital 9 - Details

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25 questions
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Phenotype
Display of a particular version of a genetic trait
Diploid, homologous pair
Somatic cells are ______ and those two make up a ________
Maternal and paternal
The homologous pair is one _____ and one _____
Alleles
Different, or changed versions of genes
Mutation
Change in a dna sequence of the gene
Homozygous for that gene
Individual who carries two copies of the same allele
Heterozygous
Individual whose genotype has two different alleles
Dominant and recessive
Allele that exerts control on a phenotype :_____ allele that has no effect on phenotype :_____
Genetic cross
Controlled mating to experiment with inheritance
F1 generation
Pgeneration are crossed to produce :
F2 gen
F1 gen crossed to make:
True-breeding
Individuals with a homogenous genotype
Mendels law of segregation
Two copies of a gene are separated during meiosis and end up in different gametes.
Dihybrids
Individuals that are heterozygous for two traits.
Recombinant phenotypes
Non parental combinations of phenotypes
R, r, Y, y : RY, Ry, rY, ry
Combinations of dihybrid produce:
Law of independent assortment
States when gametes form, the two copies of any given allele are sorted independently of any two alleles of other genes.
Incomplete dominance
When alleles produces an intermediate phenotypein the heterozygote.
Codominance
Occurs when the effect of both alleles is equally visible in the phenotype of the heterozygote.
Pleiotropy
Situation in which a single gene influences two or more traits
Epistasis
Phenotypic effect of the alleles of one gene depends on the presence of certain alleles
Polygenic traits
Traits governed by the action of more than one gene
Complex traits
Traits that cannot be predicted by laws of inheritance