The cause of less negative RMP of SA node is that the cell membranes of the sinus fibers are naturally leaky to sodium and calcium ions.

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#Id: 2042

#Unit 8. Inheritance Biology

Sex-influenced characteristic, inherited according to Mendel’s principles, but they are expressed differently in males and females. 

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#Id: 2043

#Unit 8. Inheritance Biology

Sex-limited characteristic, characteristic encoded by autosomal genes and expressed in only one sex.

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#Id: 2044

#Unit 8. Inheritance Biology

Genomic imprinting, differential expression of a gene that depends on the sex of the parent that transmitted the gene.

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#Id: 2045

#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: 4554

#Unit 8. Inheritance Biology

Two kinds of independence

1. The genes at each locus were independent in their assortment in meiosis
2. The genes were independent in their phenotypic expression
   
   
   

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#Id: 4555

#Unit 8. Inheritance Biology

Gene Interaction Takes Place When Genes at Multiple Loci Determine a Single Phenotype.