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Concepts B

In most organisms, genes encoded by mtDNA and cpDNA are inherited entirely from a single parent. A gamete may contain more than one distinct type of mtDNA or cpDNA; in these cases, random segregation of the organelle DNA may produce phenotypic variation within a single organism or it may produce different degrees of phenotypic expression among progeny of a cross.

www.whfreeman.com/pierce More information about mitochondria and chloroplasts

Anaerobic eukaryotic cell

Ifl Approximately 1 billion to 1.5 billion years ago, an anaerobic eukaryotic cell engulfed an aerobic eubacterial cell through endocytosis.

^ The aerobic endosymbiont evolved into mitochondria.

Anaerobic eukaryotic cell

Ifl Approximately 1 billion to 1.5 billion years ago, an anaerobic eukaryotic cell engulfed an aerobic eubacterial cell through endocytosis.

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