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Benjamin Lewin is a molecular biologist who founded the journal Cell [1] and authored the textbook Genes. [2] He is credited with building Cell into a recognized journal of cellular biology in a short period of time to rival Nature and Science .
During this stage, the chromosomes attach themselves by their ends (telomeres) to the inner membrane of the nuclear envelope. At the transition to the zygotene stage, the telomeres usually aggregate at a sector of the nuclear envelope, thereby forming a "meiotic bouquet" arrangement.
Researchers have not determined which other genes are located in the deleted region, but a loss of several genes is likely responsible for these developmental problems. Trisomy 13: Trisomy 13 occurs when each cell in the body has three copies of chromosome 13 instead of the usual two copies. Trisomy 13 can also result from an extra copy of ...
Human chromosome 13 gene stubs (132 P) Pages in category "Genes on human chromosome 13" The following 200 pages are in this category, out of approximately 214 total.
Unlike prokaryotes where exon-intron organization of protein coding genes exists but is rather exceptional, eukaryotes generally have these features in their genes and their genomes contain variable amounts of repetitive DNA. In mammals and plants, the majority of the genome is composed of repetitive DNA. [31]
13q deletion syndrome is a rare genetic disease caused by the deletion of some or all of the large arm of human chromosome 13. Depending upon the size and location of the deletion on chromosome 13, the physical and mental manifestations will vary. It has the potential to cause intellectual disability and congenital malformations that affect a ...
As introduced by Kurt Lewin, genidentity is an existential relationship underlying the genesis of an object from one moment to the next. What we usually consider to be an object really consists of multiple entities, which are the phases of the object at various times.
This implies that an asexual population has an intrinsic capacity to grow more rapidly with each generation. [13] This 50% cost is a fitness disadvantage of sexual reproduction. [14] The two-fold cost of sex includes this cost and the fact that any organism can only pass on 50% of its own genes to its offspring.