List of genetics pages:H

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This page is part of the EvoWiki encyclopedia of genetics and molecular biology.

Topics: Genetics - Transmission genetics - Molecular genetics - Population genetics - Quantitative genetics - Molecular biology - Genomics
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Haldane's rule - Male hybrids are sterile, female hybrids are fertile
Haploid - A cell with one copy of each chromosome
Haplosufficient - In heterozygotes, a dominant gene for which the amount of protein produced by just one copy is sufficient
Hardy-Weinberg principle - Links frequencies of genes and phenotypes in randomly mating populations
Helix destabilising proteins - Enzymes used in DNA replication
Helicase - Enzyme, part of DNA replication machinery
Hemizygous - e.g. genes on x-chromosome in male mammals, there are only one copy of the genes, where there are two copies of non-X-linked genes
Hereditary trait - Characteristic under control of genes
Heredity - Transmission of genetic material between generations
Heritability - Mathematical value of how much variation in phenotype is caused by variation in genotype and environment
Hershey-Chase experiment - An experiment that identified DNA as thr genetic material in viruses
Heterochromatin - Inactive chromatin which remains condensed throughout cell cycle
Heteroduplex DNA - Double stranded DNA region in which the nucleotide codes do not conform to standard base-pairing rules
Heterosis - Condition in which heterozygous phenotype is superior to either homozygous phenotype
Heterozygous - Possessing two different alleles for the same gene
Highly repetitive DNA - DNA which is repeated between 10⁵ and 10⁷ times in the genome
Histone - Protein found in chromatin, support DNA and assist in gene regulation
History of Genetics - A timeline of developments in genetics
Holandric - Traits controlled by genes on the Y chromosome (in mammals, varies in other groups)
Homeobox genes - Genes which regulate development
Homeodomain - Amino acid sequence found in proteins produced by homeobox genes
Homeotic mutation - Mutation which transforms a gene section into a copy of another section
Homologous chromosomes - Chromosomes or chromosome regions that are identical in terms of gene loci
Homologous proteins - Proteins that share a common ancestor (e.g. through gene duplication
Homologue - Individual chromosome in a homologous pair
Homozygous - Possessing two identical alleles for a gene
Horizontal transfer - The transfer of genetic material between reproductively isolated species
Human genome project - A project to sequence the genome of humans
Hybrid dysgenesis - The appearance of defects when different strains or subspecies are crossed
Hypersensitive site - Region around genes undergoing transcription which are sensitive to damage and digestion (e.g. by DNase)