Deviations from Mendel's Findings and Neo-Mendelism

Vocabulary flashcards covering Mendel's original generalizations, deviations from Mendelian genetics, Neo-Mendelism, and intragenic versus intergenic interactions.

Neo-Mendelism

Also known as Post Mendelian genetics; patterns of inheritance or gene interactions discovered based on Mendelian ratios that are explained by modifying Mendel's laws.

Intragenic interactions

Gene interactions that occur between the alleles of the same gene, such as incomplete dominance, co-dominance, and multiple allele series.

Intergenic (non-allelic) interactions

Gene interactions that occur between alleles of different genes present on the same or different chromosomes, such as pleiotropy, polygenes, and supplementary and complementary genes.

Mendel's Generalization on Gene and Alleles

A single trait is controlled by a single gene, and a gene has two alleles.

Mendel's Generalization on Dominance

Two alleles show an interaction in which one is completely dominant over the other.

Mendel's Generalization on Chromosomal Assortment

Factors (genes) for different traits present on different chromosomes assort independently.

Multiple allelism

A deviation from Mendelism where a single trait controlled by a single gene involves more than two alleles.

Polygenic inheritance

An inheritance pattern where a single trait is controlled by more than one gene, showing different epistatic interactions or additive effects.

Pleiotropy

An intergenic interaction where a single gene influences many traits.

Mirabilis jalapa Gene Interaction

Incomplete dominance, which is observed in the flowers of Mirabilis jalapa.