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Genetics
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Coiled chromatin, 46 are found in human body cells
chromosome
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A chart that shows all possible combinations of alleles.
punnett square
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a cell containing only one set of chromosomes - gametes
haploid
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Genotypic probability of having Aa offspring from crossing AA x Aa
50% Aa
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An allele that is masked when a dominant allele is present
recessive allele
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The physical traits that appear in an individual as a result of its genotype
phenotype
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when traits are determined by alleles on the sex chromosomes
sex-linked
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Having two identical alleles for a trait
homozygous
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An allele whose trait always shows up in the organisms when the allele is present
Dominant allele
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Genotypic probability of having aa offspring from crossing aa x AA
0% aa
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The different forms of a gene
Allele
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An organisms genetic makeup, or allele combinations
genotype
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XX is what gender?
female
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A blended phenotype. One allele is not completely dominant over the other
incomplete dominance
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Genotypic probability of having AA offspring from crossing Aa x Aa
25% AA
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Chromosomes with similar length, similar positions of centromeres, and similar loci (locations of genes).
homolgous chromosomes
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both alleles of a gene are present in the phenotype
codominance
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Having two different alleles for a trait
heterozygous
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