Master Genetics Study Guide Section 5: Non-Mendelian & Cytoplasmic Inheritance

Vocabulary and concept flashcards covering non-Mendelian inheritance, cytoplasmic DNA, genomic imprinting, and chromosomal dosage compensation.

Maternal effect source

Primarily derived from Oocytes.

$nn$ female $\times$ $Nn$ male (Maternal effect)

The outcome is all recessive.

$Nn$ female $\times$ $Nn$ male (Maternal effect)

The outcome is all dominant.

Extranuclear DNA location

Found in both chloroplast and mitochondria.

DMRs

Differentially Methylated Regions associated with genomic imprinting.

Snail coiling

Depends on the genotype of the mother.

Dwarfism (IGF2)

Depends on the genotype of the father.

MERRF inheritance (affected male $\times$ normal female)

None of the offspring are affected.

Paternal leakage ($1\%$ of $200$ offspring)

$$2$$

Mitochondrial genes

Genes that do NOT follow the pattern of maternal effect.

XXY

A male with one Barr body.

Barr bodies in XXX

$$2$$

Barr bodies in XYY

$$0$$

Barr bodies in XX

$$1$$

White female $\times$ green male (chloroplast inheritance)

The offspring are white.

Variegated female $\times$ green male (chloroplast inheritance)

The offspring can be green, white, and variegated.

Angelman syndrome deletion

Inherited from the mother.