The xylem‐colonizing bacterium Xylella fastidiosa is transmitted by various species of Homalodisca in the family Cicadellidae.

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#Unit 8. Inheritance Biology

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#Unit 8. Inheritance Biology

Phenotypic variation can be attributed to genetic and environmental influences.

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#Unit 8. Inheritance Biology

Meristic characteristic- Some characteristics are not continuous but are nevertheless considered quantitative because they are determined by multiple genetic and environmental factors.

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#Unit 8. Inheritance Biology

Threshold characteristics display only two possible phenotypes—the trait is either present or absent.

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#Unit 8. Inheritance Biology

Heritability- Phenotypic variation that is due to genetic differences

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#Unit 8. Inheritance Biology

COMPONENTS OF PHENOTYPIC VARIANCE

1. Genetic variance (Vg)

2. Environmental variance (Ve)

3. Genetic–environmental interaction variance (VGE)