Biology
- Chromosomal Aberration
Chromosomal aberration refers to a change in number of chromosomes, can occur on one, or several, or all of the chromosomes within a nucleus. This is cause by the failure of sister chromatids to separate during anaphase of mitosis or the failure of homologous...
- 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...
- Klinefelter's Syndrome Is Caused Due To The
A) absence of one of the X-chromosomes B) presence of additional copy of X-chromosome in males C) trisomy of chromosome number 21 D) presence of additional copy of X-chromosome in females The correct answer is: B) presence of additional copy of X-chromosome...
- What Is The Cause Of Turner's Syndrome?
A) Presence of additional copy of X-chromosome. B) Absence of one of the X-chromosomes C) Trisomy of chromosome number 21.D) None of these The correct answer is: B) Absence of one of the X-chromosomes...
- Diploid Chromosome Number
Humans have a diploid chromosome number of 46 chromosomes. In other words, there are a total of 46 chromosomes in human cells. The diploid number varies depending on each species. Having a diploid chromosome number means that an organism?s cells contain...
Biology
aneuploidy
Term: aneuploidy (an-+eu-+ploidy)
Origin: Anc Greek
??/an (=?-/a (privative meaning ?not?) or ??-/an-(=privative before a vowel)
??/eu(=prefix meaning "well, good, easy" )
-?????/ploos(noun) (=fold, combining form from verb ?????? /plasso(=create, make) such as in terms haploid, diploid and polyploid
-o?????/-oidis(=-oidy, suffix meaning ?form, type?).
Coined:
Lutz (1909) was the ?rst to report aneuploid chromosome numbers in two progenies of the interspeci?c cross between Oenothera lata and O. gigas. The term was coined finally in 1922 by Tackholm (1922) following his studies on genusRosa and initially it was used for indi- viduals with one chromosome less or more than the standard complemen. Dyer et al. (1970) extended the term to cells and individuals where the
Lutz (1909) was the ?rst to report aneuploid chromosome numbers in two progenies of the interspeci?c cross between Oenothera lata and O. gigas. The term was coined finally in 1922 by Tackholm (1922) following his studies on genus
loss or gain involved even a chromosome segment
Definition:
Deviation of normal chromosome leading to loss (monosomy) or gain of one (trisomy) or several individual chromosomes from diploid set of the correspomding species.
Sourse
A.K. Koul & M.K. Dhar Plant aneuploids: Suggestions for their classi?cation Euphytica 104:95?106, 1998.
- Chromosomal Aberration
Chromosomal aberration refers to a change in number of chromosomes, can occur on one, or several, or all of the chromosomes within a nucleus. This is cause by the failure of sister chromatids to separate during anaphase of mitosis or the failure of homologous...
- 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...
- Klinefelter's Syndrome Is Caused Due To The
A) absence of one of the X-chromosomes B) presence of additional copy of X-chromosome in males C) trisomy of chromosome number 21 D) presence of additional copy of X-chromosome in females The correct answer is: B) presence of additional copy of X-chromosome...
- What Is The Cause Of Turner's Syndrome?
A) Presence of additional copy of X-chromosome. B) Absence of one of the X-chromosomes C) Trisomy of chromosome number 21.D) None of these The correct answer is: B) Absence of one of the X-chromosomes...
- Diploid Chromosome Number
Humans have a diploid chromosome number of 46 chromosomes. In other words, there are a total of 46 chromosomes in human cells. The diploid number varies depending on each species. Having a diploid chromosome number means that an organism?s cells contain...