Atmospheric concentration (ppm)

CO2= 381

Methane= 1.75

Nitrous oxide= .315

Chlorofluorocarbons= 0.0005

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#Id: 6350

#Unit 8. Inheritance Biology

Barr body- Inactivated X chromosome that appears as a condensed, darkly staining structure in most cells of female placental mammals. 

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#Id: 6351

#Unit 8. Inheritance Biology

Number of Barr bodies

Differential expression of a gene that depends on the sex of the parent that transmitted the gene.

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#Id: 6352

#Unit 8. Inheritance Biology

Genetic Maternal Effect 

Determination of the phenotype of an offspring not by its own genotype, but by the nuclear genotype of its mother. 

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#Id: 6353

#Unit 8. Inheritance Biology

TLS Online TPP Program

#Id: 6354

#Unit 8. Inheritance Biology

Cytoplasmic Inheritance

Present in males and females. 

Usually inherited from one parent, typically the maternal parent.

Reciprocal crosses give different results. 

Exhibit extensive phenotypic variation, even within a single family. 

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#Id: 6355

#Unit 8. Inheritance Biology

Homoplasmy - All mutated mitochondria

Heteroplasmy - wild type + mutant mitochondria