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*  DNA - New World Encyclopedia
For instance, the largest human chromosome, chromosome number 1, is 220 million base pairs long.[17] ... The set of chromosomes in a cell makes up its genome. The human genome has approximately 3 billion base pairs of DNA arranged ... The GC base pair is therefore stronger than the AT base pair. As a result, it is both the percentage of GC base pairs and the ... and in human cells the different chromosomes even occupy separate areas in the nucleus called "chromosome territories."[105] ...
http://www.newworldencyclopedia.org/entry/DNA
*  Gene - New World Encyclopedia
Genes that appear together on the chromosomes of one species, such as humans, may appear on separate chromosomes in another ... Because the transcription starts from a specific base-pair sequence (a promoter) and stops at another (a terminator), the DNA ... Human gene nomenclature. For each known human gene, the HUGO Gene Nomenclature Committee (HGNC) approves a gene name and symbol ... Although the human genome comprises roughly 25,000 genes carrying codes for proteins, each human cell has the potential of ...
http://www.newworldencyclopedia.org/entry/Gene
*  Parrot - New World Encyclopedia
Relationship with humans. Humans and parrots have a complicated relationship. Economically, parrots can be beneficial to ... The pair bonds of the parrots and cockatoos are strong and the pair will remain close even during the non-breeding season, even ... 1998), or the sex chromosome spindlin gene in 2005 (de Kloet and de Kloet 2005), find the relationships of the main lineages of ... Birds and humans. Ringing · Ornithology · Bird collections · Birdwatching · Bird feeding · Conservation · Aviculture ...
http://www.newworldencyclopedia.org/entry/Parrot
*  Tapir - New World Encyclopedia
Tapirs and humans. Tapirs are generally shy, but when they are scared they can defend themselves with their very powerful jaws ... but pairs spend little or no time together aside from sexual activity (Morris 2005). Apart from mothers and their young ... has a significantly smaller number of chromosomes and has been found to share fewer homologies with the three types of American ... The tapir as a group provides a value for the ecosystem and for humans at the same time that it advances its own individual ...
http://www.newworldencyclopedia.org/entry/Tapir
*  Equidae - New World Encyclopedia
... although Przewalski's horse has 66 chromosomes while the domestic horse has 64. The offspring possess 65 chromosomes, but are ... Zorse or zebrula, the offspring of a zebra stallion and a horse mare; the rarer reverse pairing is sometimes called a hebra. ... The intersection of equids with humans since the Paleolithic is evident in the drawings on cave walls. The subsequent ... Bell (2004) notes that "if the offspring is crossed back to a domestic horse, the resulting animal will have 64 chromosomes and ...
http://www.newworldencyclopedia.org/entry/Equidae