Biology
- Q: Compare And Contrast The Prokaryotic And Eukaryotic Genomes
The eukaryotic genome is diploid but the prokaryotic genome is haploid. The eukaryotic genome has multiple origins of replication but the prokaryotic genome has only one origin of replication. The eukaryotic genome may have more than one chromosome but...
- How Are Genes And Other Sequences Distributed In The Genome?
KEY CONCEPTS:Repeated sequences (present in more than one copy) account for >50% of the human genome. The great bulk of repeated sequences consist of copies of nonfunctional transposons. There are many duplications of large chromosome regions.Are...
- # 28.2 The Mitotic Cell Cycle - Syllabus 2016
5.1 Replication and division of nuclei and cells 5.2 Chromosome behaviour in mitosis When body cells reach a certain size they divide into two. Nuclear division occurs first, followed by division of the cytoplasm. The mitotic...
- Centromere
Term: centromereOrigin: Anc Greek ??????/centro/(center) > ??????/centri(=sting of a wasp)> ????????/centrizo(=stitch)?????/meros (=part)Coined: Cyril Dean Darlington (1901-1981)The term introduced in 1936 by English biologist and geneticist...
- Life Outside The Chromosome
Biology concepts ? plasmid, linear organelle genomes, extrachromosomal circular DNAs, conjugation, Planet of the Apes (1968) ? a good movie, but not a great movie.Every ape was a ventriloquist; you never saw their lips move. But it did have the first...
Biology
telomere
Term: telomere
Literally meaning:
Origin: Anc Greek
?????/telos(=end)
+?????/meros(=part)
Coined/History
In 1938 by Hermann J. Muller, who believed that telocentric chromosomes with centromere terminally located, could not exist in nature. According to Muller?s hypothesis, a chromosome must be quarded by a telomere at both ends to maintain its integrity during cell division.
Definition
Telemeres are nucleoprotein structures consisting of repetitive TTAGGG sequences terminate in a 3; single-stranded G-rich overhang. Telomeres are maintained by the enzyme telomerase.
- Q: Compare And Contrast The Prokaryotic And Eukaryotic Genomes
The eukaryotic genome is diploid but the prokaryotic genome is haploid. The eukaryotic genome has multiple origins of replication but the prokaryotic genome has only one origin of replication. The eukaryotic genome may have more than one chromosome but...
- How Are Genes And Other Sequences Distributed In The Genome?
KEY CONCEPTS:Repeated sequences (present in more than one copy) account for >50% of the human genome. The great bulk of repeated sequences consist of copies of nonfunctional transposons. There are many duplications of large chromosome regions.Are...
- # 28.2 The Mitotic Cell Cycle - Syllabus 2016
5.1 Replication and division of nuclei and cells 5.2 Chromosome behaviour in mitosis When body cells reach a certain size they divide into two. Nuclear division occurs first, followed by division of the cytoplasm. The mitotic...
- Centromere
Term: centromereOrigin: Anc Greek ??????/centro/(center) > ??????/centri(=sting of a wasp)> ????????/centrizo(=stitch)?????/meros (=part)Coined: Cyril Dean Darlington (1901-1981)The term introduced in 1936 by English biologist and geneticist...
- Life Outside The Chromosome
Biology concepts ? plasmid, linear organelle genomes, extrachromosomal circular DNAs, conjugation, Planet of the Apes (1968) ? a good movie, but not a great movie.Every ape was a ventriloquist; you never saw their lips move. But it did have the first...