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Genetics and Heredity

The passing of traits from parents to offspring

Heredity

Characteristics

feature that have different forms in a population

self-pollinating

When a plant fertilizes itself

trait

a different form of a characteristic

Homologous chromosomes

chromosomes that carry the same set of genes

incomplete dominance

each allele has its own degree of influence

genes

Instructions for an inherited trait

punnett square

a diagram that shows the possible combinations of gene pairs for a given trait

Alleles

different forms of a gene that decides a characteristic

phenotype

an organism's appearance

homozygous (BB or bb)

A plant with either two dominant or two recessive genes

heterozygous (Bb)

A plant with one dominant and one recessive gene

Cross pollination

when a plant pollinates another kind of plant

Probability

the mathematical chance that something will happen

Genotype

formed from both inherited alleles

Pure Dominant:

DD

Pure Recessive:

dd

Heterozygous:

Dd

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